Ramos, Ariel J. Piano technique vol. 1, Finger repetitions X against Y fingers control, independence, balance & strength rhythmic subdivisions and essential polyrhythms Ariel J. Ramos - USA mDecks 2015 - 95 p. ISBN: 1441412164 Subjects--Topical Terms: Piano--Instruction and studyPianist LC Class. No.: ML100 / .R36 2015 c. 1