Answer: smashhit

AnswerCrossword Clue
SMASHHITBlockbuster
SMASHHITHuge success
SMASHHITStanding-room-only show
SMASHHITBig success
SMASHHIT"Hello, Dolly," for instance.
SMASHHITSellout
SMASHHITBomb's opposite
SMASHHITHuge success at the box office
SMASHHITSummer jam, say
SMASHHITTheatrical rave
SMASHHITVery successful song
SMASHHITBox-office winner