Answer: scatted

AnswerCrossword Clue
SCATTED

Sang like Ella

SCATTED

Improvised, in a way

SCATTED

Did vocal licks

SCATTED
Did vocal improvisations
SCATTED
Went off in a hurry
SCATTEDSang nonsense syllables
SCATTEDTook off in a hurry
SCATTEDTook off
SCATTEDBeat it
SCATTEDImprovised like Mel Torme
SCATTEDImprovised vocally