Crossword Clue:

Plays extemporaneously

AnswerCrossword Clue
JAMSPlays extemporaneously
OFFTHECUFFExtemporaneously
OFFTHECUFFExtemporaneously: Slang.
SPEAKOFFTHECUFFTalk extemporaneously
ADLIBSpeak extemporaneously
ADLIBSSpeaks extemporaneously
RIFFSpeak extemporaneously (on)