5(Music Sales America). Sevcik's cello studies are a superb collection of exercises to help develop bowing style, accuracy, rhythms and wrist speed/strength. Part 1 of Opus 2 of this excellent series covers: how to hold the bow, movements of the bow, dividing the bow-length, staccato and legato, detached and hopping styles of bowing, dynamic changes, spiccato and arpeggios.