Macintosh computer with PowerPC, G4, or G5 processor; Macintosh computer with Intel-based processor; 512MB of RAM; CD or DVD drive; Mac OS X 10.4.8 or higher.

Pentium III 500 MHz or higher; 512MB of RAM; CD or DVD drive; SVGA (800 x 600) or higher resolution video adapter and display Windows XP (Service Pack 2).

***Note to PC and MAC users: A small portion of this program (Circled tonics and the interval symbol) requires specific unicode fonts installed on your machine. Most newer versions of Microsoft Office and Mac OS 10.4 come pre-packaged with these fonts. Characters affected by this font include circled tonics and "" symbols and may not be visible without these fonts.