Use the buttons to learn the intervals first. Sixteen levels progress from reading unisons and seconds on just lines and spaces to all diatonic intervals including compound. The goal is to name intervals on the staff, for example Major 2nd, M2. Select an interval to hear it and see it displayed. Forty-five levels include intervals from the m2 to the compound octave, P15.
Key signatures go up to six flats or six sharps.
The goal is to be able to name intervals by ear. Select an interval to hear it and see it displayed on the staff. Fifty-two levels go from the M2 and P4 to all intervals up to the compound octave, P15. The goal is to know all Major and minor key signatures reading treble or bass clef or the grand staff. Select a key to hear its scale and see its key signature displayed.