Book 3 introduces more complex tunes within an octave. It further explores intervals across adjacent strings and introduces s emiquavers staccato bowing low second finger notes and major scales and arpeggios starting on the third finger (cello fourt h finger). More duets canons and rounds extend experience in ensemble playing. Simple harmonics and tunes in 6/8 are include d. A bowing variations page has new rhythms and bowings.