<html> <body> Dave, Here in south Texas that is more of a problem.  I'm always turning off ceiling fans.  But the problem doesn't stop here.  The noise coming out of the air-conditioner ducts is a harmonic as well.  It is too hot here to turn that off so I grin and bear it.  When the whole note blooms around the beat, you know you're there. Andrew Anderson, Artisan Piano At 09:01 AM 8/3/2007, you wrote: <blockquote type=cite class=cite cite="">I'm kind of amazed that I've never been in this situation before, but I found myself there twice yesterday. As I started tuning a brand new Kawai RX5 (6 1/2 foot grand), I noticed that A4, despite being strip muted, was beating rapidly.  I played several other notes and heard the same thing, and the beat speeds were all the same.  I finally looked overhead and saw a ceiling fan rotating rapidly (and quietly, I might add!).  I turned off the fan and they were gone.  This was the first piano I ever remember tuning that was directly under a fan.  The deflection of the sound waves off the fan blades was quite annoying and distracting. Next time you tune a piano that has notes that are beating for no apparent reason, look overhead and you might find your answer.  Dave Stahl Dave Stahl Piano Service 650-224-3560 dstahlpiano@sbcglobal.net <a href="http://dstahlpiano.net/" eudora="autourl"> http://dstahlpiano.net/</a> <hr> AOL now offers free email to everyone. Find out more about what's free from AOL at <a href="http://www.aol.com?ncid=AOLAOF00020000000437">AOL.com</a> .</blockquote></body> </html>