Related Clues:

• Remark that might get you in trouble
• Proceed without notes, say
• Like a specially formed committee
• Specially formed, as a committee
• Wing it verbally
• Improvised, like a committee
• Wing it on stage
• Like some on-the-spot wireless networks
• Like some short-term committees
• Bit of stage creativity
• Disorient one's co-stars, in a way
• Wing it vocally
• Impromptu, as a committee
• Ignore the cue cards, say
• Stage surprise