GarageBand 2 Essential Training - lynda.com Online Training Library ™
This series of movies starts by taking you through the basics of using the GarageBand interface, and then shows you how to work with Apple Loops, Software Instruments, and Real Instruments.
The Interactive Circle of Fifths ("the Circle" for short) is a tool designed to help musicians to: (a) figure out the key of a piece of music, (b) easily transpose music to a different key, (c) compose new music, and (d) understand key signatures, scales, and modes.