The harpejji has a note marking system which is similar to a piano. The white notes on the harpejji are the white notes on a piano. The same goes for the black notes. Clusters of 2 black notes are C# and D#. Clusters of 3 black notes are F#, G# and A#, all like a piano. The C markers are hollow. Unlike a piano, the harpejji lets you capitalize on muscle memory a lot more. That's because all chords and scales of any type use the same fingering patterns, regardless of the root note. Click the button below to learn the Top 5 Reasons to Play Harpejji.