- Mojo Nya (Musical group)1
- Motion picture theaters1
- National Ballet of Canada1
- National Ballet of Canada. Orchestra1
- Nilsson, Birgit1
- Ogden, Ruth Digby Hope, 1896-19811
- Opera companies1
- Orchestra1
- Organists1
- Other People (Musical group)1
- Palmetto Outdoor Historical Drama Association (S.C.)1
- Payne, Mabel Bradley, 1910-20041
- Pondering (Musical group)1
- Rascher, Sigurd1
- Reed, Daniel A., 1892-19781
- Residentie-Orkest (Hague, Netherlands)1
- Ritz Theatre (Columbia, S.C.)1
- Root Doctors (Musical group)1
- Royal Philharmonic Orchestra1
- Rubinstein, Artur, 1887-19821