i think it helps especially for my legatos.

(or so i would like to believe after paying 60 bucks for it)


but actually its just to keep my fingers doing something during lectures. my fingers cant seem to be still. they must either be moving like playing or tapping on things (which irritates whoever i am sitting with in class).
and i (would like to) believe it helps my legato...because gapnap's legato is killer and i wanna be like him.