O
Mike Oldfield
Le Orme
Geoffrey Oryema
P
Pearl Jam
Mauro Pelosi
The Pentangle
Perigeo
Shawn Phillips
Phish
Pink Fairies
Pink Floyd
The Pogues
Porcupine Tree
Premiata Forneria Marconi
Elvis Presley
Procol Harum
The Psychedelic Furs