Possible Clues:

• Entertainer runs in at first at beginning of evening
• Performer's result including times recorded separately
• Circus performer, e.g.
• Left Bank frequenter
• 'Public performer, dancer or singer (7)'
• Blakey is extremely talkative performer
• Entertainer is tense putting across talent with energy
• Gifted performer
• Cunning is the heartless entertainer
• Piece of Mozart is testing performer