Dictionaries, Thesauruses, Pictures, and Press Releases
- On Wenlock Edge
- Oncina, Juan
- Oncina, Juan
- ondeggiando
- ondes Martenot
- Ondine
- Ondrícek
- Ondr̆íc̆ek, Frantis̆ek
- one-step
- Onégin, (Elisabeth Elfriede Emilie) Sigrid (née Hoffmann)
- ONeill, Dennis
- ONeill, Norman
- ongarese
- Onishi, Junko
- Onslow, (André) Georges (Louis)
- Onslow, Georges (Louis)
- Onward, Christian Soldiers
- op.
- op. posth
- open diapason