Oasis is a British rock band formed in 1991 in Manchester, consisting originally of 4 members including brothers Liam and Noel Gallagher. Noel joined as the band's songwriter and helped release their successful debut album "Definitely Maybe" in 1994. Over the next few years they had commercial success with albums like "(What's the Story) Morning Glory?" but the band was also known for controversies stemming from Liam's substance abuse and fights between the brothers, which eventually led to Noel quitting in 2009. They drew influence from bands like The Beatles, The Stone Roses, and The Rolling Stones.