Oasis: Supersonic uses rare, previously unreleased clips and exclusive interviews with the brothers Noel and Liam Gallagher, their mother, their older brother and band members to tell the story of Oasis - one of the world's largest rock bands that impacted an entire generation. The film documents the band's way to fame from the formation of Oasis 1991 through the release of the first single 1994 to the record play at Knebworth Park in August 1996, where 2.6 million people queued to buy tickets. The band played for 125,000 fans several consecutive nights. When the Definitely Maybe album came out, it became the fastest-selling debut album ever. Kulturnyheterna's Sofia Olsson thinks that "Oasis: Supersonic is obviously a nostalgic dessert, mainly for 35-40 year olds, who grieve for record stores, parkas, adidas shoes and indie pop, but it's also a great story about a very complicated sibling relationship."