Drills that apply theory to the keyboard without staff notation.
+ Play scales by name (F# major, C harmonic minor...)
+ Play chords by name (D, eb, g#o, Bb7, Em7...)
+ Play chords by function (C:V7, d:iv, B:viio, D:V/ii...)
+ Play inverted chords (F6, Eb:V6/5...)
+ Play chords by scale degree name -- student must know quality (G:dominant, eb:subdominant...)