Possible Clues:

• Group working in a school - the type employed to control the players
• Leading musician’s mother engaged by detective in raillery
• Director of players refashioned team's brand
• Schubert's fifth, with someone teaching conductor
• Amid badinage, detective's keeping mum — he knows the score
• Dams bust during tease by such as Alexander or Macnamara
• One trying to control players brands team "lousy"
• *Person with a baton
• Conductor didn't allow listening to original recording
• Samba trend (anag.)