The Rise and Fall of Oasis - Episode 4 - Champagne Supernova...? The Missing Gallagher Oasis are Massive. Earls Court, Knebworth and actual success in America. But with that comes arrogance, defiance and a fight so ferocious that the band appear to have finally split up. We cover the chaotic month that sees the band play Knebworth, have a meltdown live on MTV, and a US tour that starts without one brother, and ends without the other. Utter chaos, and pure drama at the very peak of their powers. Post Knebworth, Oasis really didn’t know what to do next, and as they lurch from one drama to another, the British tabloids have made them a front page priority.