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<div class=Section1>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi Michael,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Interesting. Juan Mas Cabre (Pure Sound
Wire) said the same thing. He can’t rescale most Asian pianos for Pure
Sound wire because of the high tension scale. He has helped me redesign a piano
with that problem (a 5’ 4” Vose & Sons), and moving the bridge
only as much as 4 mm has resulted in big dividends in some spots. Of course,
I’m not going to redesign the long bridge/soundboard with all it’s
implications for a fairly inexpensive practice piano. Especially one that is
less than ten years old… (While it’s still Shiny we’ll
probably sell it while we can get the best price.)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Also interesting is that we’ve
noticed that our 3 Wapin pianos (An SD10, D and M) don’t break strings.
They were done about ten years (or so) ago. Why would that be?? I just talked
with Vince and we might have him “Wapinize” one or more of the
Kawais. This may be one of the things I’ve been looking for, besides the
other advantages I see with Wapin; improved sustain, tone, etc.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I would like to see what Eric and Lawrence
have to say. This may not be a “magic bullet” but it would be a big
deal if Wapin could significantly diminish string breakage. It will probably
get you into more controversy over “is this science” or not…
but hey, if it works I’m there!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim Busby RPT<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>BYU<o:p></o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Michael Wathen<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, November 26, 2006
8:19 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">College
and University Technicians</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [CAUT] caut Digest,
Vol 1092, Issue 50</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>Jim,</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>One common reason for string breakage is
that the speaking length of the string is not correct. If that is the
case then increasing or changing the diameter will have no effect. I don't
offhand know the calculation but I do remember that it is independent of
the diameter of the string. I remember that a few years ago we, on the list,
people predicted the pitch at which different size diameters of strings would
break for note C8. If I remember correctly we verified this result. It
made no difference what the string diameter was they all broke around the same
pitch.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'> Let me suggest that you restring
the section or sections and modify the bridge with Wapin.
Very easy to do if you're restringing anyway. </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>I'm not sure about this and perhaps Eric
or Lawrence could respond. There are a number of practice room pianos at
CCM that have Wapin on them. I have a hunch that Wapin will also reduce
string breakage. The practice room pianos have had Wapin on them for over
ten years now. I wonder if the string breakage is less on these pianos.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>Michael Wathen</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 face=Tahoma><span
style='font-size:12.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> caut-bounces@ptg.org
[mailto:caut-bounces@ptg.org]<b><span style='font-weight:bold'>On Behalf Of </span></b>pianomanwo@aol.com<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, November 26, 2006
8:51 AM<br>
<b><span style='font-weight:bold'>To:</span></b> caut@ptg.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [CAUT] caut Digest, Vol
1092, Issue 50</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi Bill<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I am replying to the problem of strings breaking on the <span
class=correction><span id=""><span id="">Kawai</span></span></span> <span
class=correction><span id=""><span id="">KG2</span></span></span> e,c,d,<span
class=correction><span id=""><span id="">ect</span></span></span>. Changing the
strings will not eliminate the problem, but it will slow up at first. what
seems to have worked for me is when I <span class=correction><span id=""><span
id="">restrung</span></span></span> the piano I went down 1/2 size on the wire
and gage them slightly heavy <span class=correction><span id=""><span id="">letoff</span></span></span>
and have lost only 4 strings in 10<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>years This piano is in a heavy used classroom.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Walter <span class=correction><span id=""><span id="">Oventrop</span></span></span> <span
class=correction><span id=""><span id="">RPT</span></span></span> <span
class=correction><span id=""><span id="">SLPS</span></span></span> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <br>
-----Original Message-----<br>
From: caut-request@ptg.org<br>
To: caut@ptg.org<br>
Sent: Fri, 24 Nov 2006 1:00 PM<br>
Subj<span class=correction><span id=""><span id="">ect</span></span></span>:
caut Digest, <span class=correction><span id=""><span id="">Vol</span></span></span>
1092, Issue 50<o:p></o:p></span></font></p>
<div id="AOLMsgPart_1_1af9a9f1-93f8-4c43-ba6d-8e90087db2ab">
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'>Send caut mailing
list submissions to<o:p></o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'>
<a href="mailto:caut%40ptg.org">caut@ptg.org</a><o:p></o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'><o:p> </o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'><o:p> </o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'>To subscribe or </span></font><span
id=""><span id=""></tt><span class=correction><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>unsubscribe</span></span></font></span></span><tt><font size=2
color=black face="Courier New"><span style='font-size:10.0pt;color:black'> via
the World Wide Web, visit<o:p></o:p></span></font></tt></p>
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size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
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so it is more specific<o:p></o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
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<div id="AOLMsgPart_2_1af9a9f1-93f8-4c43-ba6d-8e90087db2ab">
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'>Today's Topics:<o:p></o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'><o:p> </o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'><o:p> </o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'> 1.
Re: breaking strings, </span></font><span id=""><span id=""></tt><span
class=correction><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>Kawai</span></span></font></span></span><tt><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;color:black'>
</span></font></tt><span class=correction><span id=""><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'><span id="">KG-2A</span></span></font></span></span><tt><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;color:black'>
(1997) (Jim </span></font><span id=""><span id=""></tt><span class=correction><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>Busby</span></span></font></span></span><tt><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;color:black'>)<o:p></o:p></span></font></tt></p>
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<table class=MsoNormalTable border=0 cellpadding=0 id=Table1>
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<td nowrap valign=top bgcolor="#F9F9F9" style='background:#F9F9F9;padding:
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<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:8.5pt;font-family:Arial;color:black'>From:<o:p></o:p></span></font></p>
</td>
<td valign=top bgcolor="#F9F9F9" style='background:#F9F9F9;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:8.5pt;font-family:Arial;color:black'>jim_<span
class=correction><span id=""><span id="">busby</span></span></span>@byu.edu<o:p></o:p></span></font></p>
</td>
</tr>
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<td valign=top bgcolor="#F9F9F9" style='background:#F9F9F9;padding:.75pt 7.5pt .75pt 6.75pt'>
<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:8.5pt;font-family:Arial;color:black'>To:<o:p></o:p></span></font></p>
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<td valign=top bgcolor="#F9F9F9" style='background:#F9F9F9;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:8.5pt;font-family:Arial;color:black'>caut@ptg.org<o:p></o:p></span></font></p>
</td>
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<td valign=top bgcolor="#F9F9F9" style='background:#F9F9F9;padding:.75pt 7.5pt .75pt 6.75pt'>
<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:8.5pt;font-family:Arial;color:black'>Subj<span
class=correction><span id=""><span id="">ect</span></span></span>:<o:p></o:p></span></font></p>
</td>
<td valign=top bgcolor="#F9F9F9" style='background:#F9F9F9;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:8.5pt;font-family:Arial;color:black'>Re: [CAUT] breaking
strings, <span class=correction><span id=""><span id="">Kawai</span></span></span>
<span class=correction><span id=""><span id="">KG-2A</span></span></span>
(1997)<o:p></o:p></span></font></p>
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<td valign=top bgcolor="#F9F9F9" style='background:#F9F9F9;padding:.75pt 7.5pt .75pt 6.75pt'>
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style='font-size:8.5pt;font-family:Arial;color:black'>Date:<o:p></o:p></span></font></p>
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id=AttachedMessageDate>
<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:8.5pt;font-family:Arial;color:black'>Fri, 24 Nov 2006 12:20
PM<o:p></o:p></span></font></p>
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</tr>
</table>
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<div id="AOLMsgPart_7_1af9a9f1-93f8-4c43-ba6d-8e90087db2ab">
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</script></span></font><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Hi,</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I haven’t measured it but the angle
looks “normal” (within range), but I will check it along with the
other things you mentioned. Good list.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>We keep the hammers shaped and voiced
regularly so I don’t believe it is that. Since it is mostly the <span
id=""><span class=correction><span id="">Kawais</span></span></span> that break
more I’m suspicious of “scaling anomalies” and such, but
since having several “CAUT witnesses” of the string fatigue
diagnosis my bet is it’s probably that. </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks again,</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim <span id=""><span class=correction><span
id="">Busby</span></span></span> BYU</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center>
</span></font></div>
<div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
caut-bounces@ptg.org [<span id=""><span class=correction><span id="">mailto</span></span></span>:caut-bounces@ptg.org]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Geoffrey Pollard<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, November 23, 2006
4:23 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">College
and University Technicians</st1:PersonName><br>
<b><span style='font-weight:bold'>Subj<span id=""><span class=correction><span
id="">ect</span></span></span>:</span></b> Re: [CAUT] breaking strings, <span
id=""><span class=correction><span id="">Kawai</span></span></span> <span id=""><span
class=correction><span id="">KG-2A</span></span></span> (1997)</span></font><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div style='margin-bottom:12.0pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2
face="Times New Roman"><span style='font-size:10.0pt'>Hello Jim,<br>
<br>
I would try to get a good handle on front duplex to capo string angles as part
of information gathering during rescaling. It is not unknown for this angle to
be excessive in <span id=""><span class=correction><span id="">Kawai</span></span></span>
piano trebles at times. If the angles are OK (11 - 20 degrees - perhaps using
Ron <span id=""><span class=correction><span id="">N's</span></span></span>
device shown in his 9/11/06 post on this list) - then wire fatigue, hard
hammers, flat hammers, scaling anomalies, capo profile, string cushion friction
(in no particular order) are some likely culprits in my view.<br>
<br>
Regards,<br>
Geoffrey Pollard<br>
<br>
<br>
-----Original Message-----<br>
From: caut-bounces@ptg.org on behalf of Jim <span id=""><span class=correction><span
id="">Busby</span></span></span><br>
Sent: Tue 11/21/2006 12:20 PM<br>
To: <st1:PersonName w:st="on">College and University Technicians</st1:PersonName><br>
Subj<span id=""><span class=correction><span id="">ect</span></span></span>:
[CAUT] breaking strings, <span id=""><span class=correction><span id="">Kawai</span></span></span>
<span id=""><span class=correction><span id="">KG-2A</span></span></span>
(1997)<br>
<br>
List,<br>
<br>
<br>
<br>
We have four <span id=""><span class=correction><span id="">KG-2As</span></span></span>
that now break strings regularly (weekly) in octaves<br>
5-7. The bass is also becoming "<span id=""><span class=correction><span
id="">thumpy</span></span></span>". Granted, they are very heavily<br>
used (Up to 17 hours a day), but we try to keep them voiced and<br>
regulated so I don't believe maintenance is the issue; I think the<br>
strings are simply fatigued. (I can break strings myself with 20 - 30<br>
good solid blows.) I tried decreasing the blow to give a bit less power<br>
hoping that it would diminish the breakage, and that helps somewhat, but<br>
I don't like to sabotage piano performance just so I can work less...<br>
BTW, the strings break mainly at the v-bar.<br>
<br>
<br>
<br>
I will be <span id=""><span class=correction><span id="">restringing</span></span></span>
these pianos next month (I've HAD IT with them...)<br>
so does anyone have any advice concerning the scaling, etc.? I will be<br>
dressing the V-bar and doing all the usual prepping. This is a high<br>
tension scale and I'd love to redesign it but don't want to put that<br>
kind of time and money into these...<br>
<br>
<br>
<br>
Any helps out there???<br>
<br>
<br>
<br>
Thanks.<br>
<br>
<br>
<br>
Jim <span id=""><span class=correction><span id="">Busby</span></span></span>
BYU<br>
<br>
<br>
<br>
<br>
</span></font><o:p></o:p></p>
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<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'>_______________________________________________<o:p></o:p></span></font></tt></p>
<p class=MsoNormal style='background:white'><tt><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;color:black'>caut list info: <a
href="https://www.moypiano.com/resources/#archives" target="_blank">https://www.moypiano.com/resources/#archives</a><o:p></o:p></span></font></tt></p>
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