Chords » Pentads » Piano Exercise 1Read 9 and 7(♭9).StartExercise 2Locate 9 and 7(♭9).StartExercise 3Read maj9 and m9.StartExercise 4Locate maj9 and m9.StartExercise 5Read 9, 7(♭9), maj9 and m9 in inversion.Start