11.   His left hand rested on his stomach and its fingers moved slightly.

12.   His left hand rested on his stomach and the fingers moved slightly.

13.   Tendons were attached and gently tugged to make sure they would cause fingers to move.

14.   The tiniest error, meaning a finger moved a micromeasurement on the fingerboard, translates into out-of-tune music.

15.   Then one hand emerged from the sheet and the fingers moved.