- The Motown Brass -- The Mountains & The Trees
- The Mourning After -- The Moviegoers
- The Movielife -- The Mozz
- The MPC's -- The Mudcats
- The Mudders -- The Muhal Richard Abrams Orchestra
- The Mulberry Purple -- The Mumlers
- The Mummers -- The Murder Squad T.O.
- The Murdered -- The Music
- The Music. -- The Music Masters Of Armenia
- The Music Messenger -- The Musical Theatre
- The Musician -- The Mustangs
- The Mustard Procedure -- The Mwirugavu Yalyaki Nkwanzi Group
- The Myddle Class -- The Mynabirds