<HTML>In a message dated 12/23/02 10:14:24 PM Central Standard Time, tune4u@earthlink.net writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">whereas A# doesn't beat at all, of course, nor does any pitch, unless it is beating against a different pitch. </BLOCKQUOTE> Alan Every pitch beats. It is also called cycle per second. On an imperial Bosey, you can hear the beat rate of the lowest note at 16 BPS. You can also hear beats as the diffence between two intervals. That is where those partials come in. Wim  </HTML>