Possible Clues:

• Sequence of notes involving piano and lute - head surgeon's instrument
• Skull the Spanish attached with small knife
• Small surgical knife
• A surgeon's knife 97)
• Knife-point jerks in ring
• Piano in musical exercise close to stall -- a theatre accessory?
• Sharp cutting tool
• "Grey's Anatomy" prop
• One cuts bit of loaf well, but not the ends
• What's the point of surgery?