Music Theory for Musicians and Normal People. By Toby W. Rush This page includes links to each of the individual Music Theory pages I've created in PDF form. This is a work in progress; I am writing new ones regularly and fixing errors and omissions on existing ones as I find them. Learn Piano Online at the key-notes Virtual Piano Studio. I Am Paul Pearson - Supplier of custom fabricated props for Film and TV for over 40 years, from Spielberg to Star Trek, I've done it all. AMA! : IAmA. Piano help.