Possible Clues:

• Way to secure old record with note on music
• Don't change anything about old way of recording piece by Beethoven
• Group that sued patient, given odd letters
• Group of musicians being one over the eight? Quite the opposite!
• Two trios and a soloist?
• Chamber group, maybe
• Put outside private group of musicians
• The dwarfs, e.g.
• Singing group
• Lucky musical group?