Possible Clues:

• Harmonica
• Music producer's complaint about composer spending a grand
• Opening heart, perhaps, and play this
• One's played blooming hard, pirate claims
• One's musical tongue?
• Groan unhappily after opening bars played by one
• Multi-hole instrument
• What produces musical sounds? The tongue?
• Harmonica, e.g.
• Author detailed gnome to replace music maker