Answer:

crescendo

Answer	Crossword Clue
CRESCENDO	Buildup
CRESCENDO	Musical buildup
CRESCENDO	Increase in loudness

CRESCENDO	Music marking
CRESCENDO	From Italian for "growing"
CRESCENDO	Musical passage that gets gradually louder
CRESCENDO	Musical direction.
CRESCENDO	Gradual increase in loudness.
CRESCENDO	Gradual increase in volume
CRESCENDO	Peak
CRESCENDO	Sound surge

CRESCENDO	Soprano's increase
CRESCENDO	Musical surge
CRESCENDO	Score buildup