Olivia Dean　

Olivia Rodrigo　

Orange Goblin　

Heavy metal rockers that compose Orange Goblin are Martyn Millard (bass), Ben Ward (vocals), Joe Hoari (guitar), Pete O’Mally (guitar), and Chris Turner (drums), and together these f ..more

OneRepublic　

Featuring the anthemic songwriting of Ryan Tedder, and balancing pop with alternative rock influences, OneRepublic became a regular presence on the charts of North America, Europe, and Australas ..more

Orchestral Manoeuvres In The Dark (OMD)　

Featuring the core members Paul Humphreys and Andy McCluskey, the Liverpudlian synth pop group Orchestral Manoeuvres in the Dark formed in the late ’70s. Humphreys and McCluskey began p ..more

Opeth　

Brought together in Stockholm by guitarists Peter Lindgren and Mikael Akerfeldt in 1990, Opeth added progressive influences and acoustic instrumentation to their brand of Swedish death metal. ..more

Offspring　

The Offspring’s metal-inflected punk became a popular sensation in 1994, selling over four million albums on an independent record label. While the group’s credentials and approach follow the ..more

Ocean Colour Scene　

Falling between the energetic pop/rock of mod revival and the psychedelic experimentations of Traffic, Ocean Colour Scene came to be one of the leading bands of the traditionalist, post-Oasis ..more

Olivia Newton John　

Olivia Newton-John skillfully made the transition from popular country-pop singer to popular mainstream soft rock singer, becoming one of the most successful vocalists of the ’70s in the proc ..more

OASIS　

Oasis shot from obscurity to stardom in 1994, becoming one of Britain’s most popular and critically acclaimed bands of the decade in the process. Along with Blur and Suede, they were responsi ..more

Ozzy Osbourne　

Though many bands have succeeded in earning the hatred of parents and media worldwide throughout the past few decades, arguably only such acts as Alice Cooper, Judas Priest, and Marilyn Manson ..more