<HTML>Tom The piano is the same, but the environment is different. That can have a lot= of effect on the piano. For one thing, there is more air around the piano, = and maybe even more reverberation, which will cause echoes of the sound comi= ng back at you. That might be a reason you are hearing false beats. Also, ch= eck to make sure there is no fan up in the ceiling. that will also cause "tr= ue false beats." Perhaps the poor rendering was a problem before, but you might not have noti= ced it, because you didn't have to change the tuning as much. With the piano= being on stage, it will go out of tune more, so you are changing the string= s more. If you can't seem to get the string to stay, try releasing the tensi= on on one end of the string, and pulling it up on the other end. That gets t= he notches away from the pressure points. As far as the broken string, that might be purely coincidental. Wim In a message dated 3/23/03 1:53:07 PM !!!First Boot!!!, Tvak@aol.com writes:= <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT= : 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Piano in question: Yamaha P2.&n= bsp; This piano has been in the rehearsal room at a local theater for 15 years and I've been tuning it for about 5 years.  = This past week it was moved down to the theater stage for a production where it <= BR> will be used as the performance piano in the onstage band.  I am shocked at how much this has changed the piano.  Suddenly the stri= ngs don't render easily; in fact, one broke, not at the becket but at the pressure bar.  My tuning efforts yesterday were very difficult as the s= tring would stay, stay, stay, and then with one tiny movement of the pin, shoot wa= y sharp, past the target.   In addition, the tone is strange on some strings.  D5, D#5, and E5 for = instance, sound as if there are two sizes of strings on the same unison.&nbs= p; There is a metallic-ness to the tone and the unisons don't sound pure---none= of the strings in these unisons have any false beats, but together they sound...well...funky.  This was certainly not apparent in the rehearsal= room. In addition, true false beats have also appeared throughout octaves 6 and 7.=   (Is that an oxymoron: "true false" beats?) None of this was the case when the piano was in the rehearsal room.  Th= e humidity is higher in the theater; I measured it at 47%.  (I believe th= e humidity in the rehearsal room was closer to 30%.)  I'm sure that the <= BR> temperature on stage varies greatly, from performance-hot, to the 65 degrees= that it was when I tuned it yesterday.   So, today, I'll go in and CLP the strings at the pressure bar, seat the strings to the bridge in the treble, and re-tune. I'm sure that the humidity must be the culprit behind the changes I've seen,= but why/how would it change the timbre on those notes?  Why the difficu= lty rendering the strings?  (Rust couldn't form in 47% humidity in one week...could it?) Tom S </BLOCKQUOTE> </HTML>