From: "Diane M. Clark"
Subject: Re: Meaning of C1, E4 nomenclature
To: VOCALIST <vocalist>
Organization: Rhodes College
Send reply to: VOCALIST <vocalist>

Margaret Scheers wrote:

> Hello,
>
> I've been lurking on the list for a bit and I'm not familiar with the terms
> A2, C5 and so on. How do they relate to Middle C, the C below middle C and
> so forth?

C1 is the lowest C on the piano keyboard. The notes above it, D-B, are also
numbered 1. Middle C is C4.