Related Clues:

• Crossed the mob, in a way
• Competed on the "The Voice"
• Performed on karaoke night
• Entertained at a 29-Across, e.g
• Confessed (sl.)
• Caroled, perhaps
• Performed a duet
• Did more than hum
• Made music without an instrument
• Spilled everything
• Featured in choir, perhaps, part of diocesan group
• Performed a cantata, say
• Trilled or tattled
• Performed 38-Down, perhaps
• Performed an anthem