Possible Clues:

• Its players know the score: Abbr.
• Grp. of players
• L.A. Pops, for one
• Symphonic group: Abbr.
• Symphony performer: Abbr.
• N.Y. Philharmonic, e.g
• Gp. playing a symphony
• ELO pt.
• Mus. ensemble
• Pit crew? (Abbr.)