<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1264" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Thanks to Bob Davis for his most = informative article on deriving the frequencies of notes! I shall read it avidly and = see what I can gain!</FONT></DIV> <DIV><FONT face=Arial size=2>Michael G (UK) after a hard day's work = on nine school pianos...</FONT></DIV></BODY></HTML>