<HTML> <HEAD> <TITLE>Re: [CAUT] pitch under the lights</TITLE> </HEAD> <BODY> Your = basic house cat or two, perhaps. They do a great job of keeping us warm at n= ight.  ;-) Alan <HR ALIGN=CENTER SIZE="3" WIDTH="95%">From: David Ilvedson <ilvey= @sbcglobal.net> Reply-To: <ilvey@sbcglobal.net>, "College and University = Technicians <caut@ptg.org>" <caut@ptg.org> Date: Tue, 26 Apr 2005 09:05:40 -0700 To: <caut@ptg.org> Subject: RE: [CAUT] pitch under the lights So what we really need is a plate heater, something that will let the plate= and strings warm evenly...hmm....? David I. <HR ALIGN=CENTER SIZE="3" WIDTH="100%">Original message From: Don Mannino To: College and University Technicians Received: Tue, 26 Apr 2005 08:00:10 -0700 Subject: RE: [CAUT] pitch under the lights Barbara Ric= hmond  wrote   > PS  How long does it take a hot piano to go back up in pitch? &= nbsp;(Not a joke, just a question.)<FONT= SIZE="4"> As Laurence wrote, it will slowly settle= back.  What happens with temperature changes is that at first the stri= ngs warm up and go flat, then gradually the plate warms up which makes the p= itch go sharp a little.  If you close up the piano during the opening p= arts of the concert, it will drift a little, but the plate changes slowly. &= nbsp;The strings will then warm up quickly once the piano is in place under = the lights for the performance. DM </BODY> </HTML>