Related Clues:

• The Musketeers, e.g
• Issue attending to a series of movements
• Maroon 5, if two members were crushed by a piano (hey, a guy can dream)
• The Police, e.g
• See 6
• See 7
• Somewhat vitriolic, categorising some musicians
• Issue a word of thanks for some music
• So upbeat a piece!
• Small group experiencing civil unrest back to front
• Pair when joined by royal?
• Boy attending a musical performance
• Uplifting numbers at a musical performance
• Players in front row, say, of small musical group
• Music that's played as composed, not as a variation