Possible Clues:

• Musical instrument producing oddly loud note
• Minstrel's music maker
• Fine to abandon wind instrument for plucked one
• Stringed instrument shaped like a halved egg
• Signora leaves regulations to plucky musical type
• Leader leaves wind instrument to get one that's strummed
• Serenade accompaniment
• Turns up, university finds Lawrence with plucky sort that makes music
• Vintage Tull out-take reviewed in 'Melody Maker'
• Mandolin cousin of old