Answer:

retunes

Answer	Crossword Clue
RETUNES	Adjusts pitch
RETUNES	Adjusts
RETUNES	Fixes a piano again

RETUNES	Adjusts, as a piano
RETUNES	Prepares to play after a break
RETUNES	Restores to harmony.
RETUNES	Primes the piano again
RETUNES	Pulls some strings?
RETUNES	Fixes, as an instrument
RETUNES	Makes grand adjustments?