Related Clues:

• Expressed symbolically, editor's instruction not to write rubbish?
• Wrote, as music
• Written using symbols -- indefinite number to date misinterpreted?
• Wrote, as a musical score
• Recorded music?
• Academic set up outside gallery and wrote music
• Written like a music score
• Added comments to approving gesture when touring gallery
• Written (like music)
• Maybe a conventional fifties-style fellow given symbolic representation
• Introducing gallery, sign marked
• Scored having picked up fellow outside gallery
• Added to the staff?
• Written for an instrumentalist