Wow!

If you compose music or youre learning music theory get this app.

Well thought out interface, lots of functionality, great features - makes this one of the most useful apps for me!

5+ if I could.

Update:
While using the app I found that the following doesnt sound:
Gb7b13/C Bass: C

Bluebeep about Pro Chords - Instant Inspiration - w. WiFi MIDI