Answer:

serenader

Answer	Crossword Clue
SERENADER	Wooer, perhaps
SERENADER	One who might play under a balcony
SERENADER	Troubadour

SERENADER	The barber's side line: "Gil Blas."
SERENADER	Warbling Romeo.
SERENADER	One who sings to the balcony
SERENADER	Giovanni, in "Don Giovanni"
SERENADER	One playing to the balcony?
SERENADER	Guitar player outside window