2. An American psychedelic folk group active in the 1970?s

3. An alias of American deep house producer Omar-S

4. A British classical music group active in the mid-1980?s

1. Oasis were an English rock band that formed in Manchester in 1991. Originally known as The Rain, the group was formed by Liam Gallagher (vocals and tambourine), Paul Arthurs (guitar), Paul McGuigan (bass guitar) and Tony McCarroll (drums, percussion), who were soon joined by Liam's older brother Noel Gallagher (lead guitar and vocals).

Its members were signed to independent record label Creation Records and released their record-setting debut album Definitely Maybe in 1994, including hits like Live Forever and Supersonic.

The following year, the band recorded the critically acclaimed (What's the Story) Morning Glory? with their new drummer Alan White that led to international success propelled by singles Wonderwall, Don't Look Back in Anger and Champagne Supernova. In 1997, Oasis released third album and became the fastest-selling album in UK chart history, aside Michael Jackson's Bad. McGuigan and Arthurs left the band as they went on to record and release Standing on the Shoulder of Giants and were replaced by Gem Archer and Andy Bell who joined the group for the recording of Heathen Chemistry.

In August 2009, Noel Gallagher announced his departure from the band. Liam Gallagher initially stated that Oasis were "done", but later in February 2010 announced that the remaining members of the band would continue to record music, and did not rule out the possibility of retaining the Oasis name. However, Liam and other former members of the band are instead continuing under the name Beady Eye.

2. American rock band: Oasis was an American rock band from Marin County, California active in the 1970s. Their sound has been described as psychedelic folk rock, progressive folk and psychedelic pop, characterized by male/female harmonies. With the help o[f David Crosby of famed Crosby, Stills & Nash, they recorded one album, Oasis, released on the Cranbus label in 1973.

Members Shelly Fox was previously in Cookin Mama, and Stephen Barncard also worked with Chet Nichols and David Crosby. Kelly Bryan had earlier been in the short-lived Grootna, and later played on a couple of albums by Jesse Colin Young.

Between 1971 and 1978 members of Oasis also recorded under the name RJ Fox and completed an album for Atlantic in 1971 which was never released. A double disc collection of Oasis and RJ Fox material was compiled by the Black Bamboo label in 1998. RJ Fox: Retrospective Dreams included the lost LP, tracks from the Oasis album and many others.

3. American deep house producer: Oasis is an alias of Omar-S (Alex O. Smith) from Detroit, a deep house / techno producer.

4. British classical group: Oasis was a short-lived English classic group active through 1984-1988 featuring Peter Skellern, Julian Lloyd Webber (later replaced by Audrey Riley), Mitch Dalton, Bill Lovelady and Mary Hopkin. Oasis released only self-titled album and two singles and toured till 1988.

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Oasis were an English rock band that formed in Manchester in 1991. Originally known as The Rain, the group was formed by Liam Gallagher (vocals and tambourine), Paul "Bonehead" Arthurs (guitar), Paul "Guigsy" McGuigan (bass guitar) and Tony McCarroll (drums, percussion), who were soon joined by Liam's older brother Noel Gallagher (lead guitar and vocals). They have had eight UK number-one singles and eight UK number-one albums, and won fifteen NME Awards, nine Q Awards, four MTV Europe Music Awards and six BRIT Awards, including one in 2007 for outstanding contribution to music and one for the best album of the last 30 years as voted by the BBC Radio 2 listeners; they have been nominated for three Grammy Awards. As of 2009, the band have sold an estimated 70 million records worldwide. Also the band was listed in the Guinness Book of World Records in 2010 for ?Longest Top 10 UK Chart Run By A Group? after an unprecedented run of 22 successive Top 10 hits in the UK. The band also holds the Guinness World Record for being the "Most Successful Act of the Last Decade" in the UK between the years 1995 and 2005, spending 765 weeks in the Top 75 singles and albums charts.

Its members were signed to independent record label Creation Records and afterwards released their record-setting debut album Definitely Maybe in 1994. The following year, the band recorded (What's the Story) Morning Glory? (1995) with their new drummer Alan White in the midst of rivalry with Britpop peers Blur in the charts. The Gallagher brothers featured regularly in tabloid newspapers for their sibling disputes and wild lifestyles. In 1997, Oasis released their third album, Be Here Now, and although it became the fastest-selling album in UK chart history, the album's popularity tapered off quickly. The band lost members Paul McGuigan and Paul Arthurs as they went on to record and release Standing on the Shoulder of Giants in 2000 and were replaced by Gem Archer and Andy Bell who joined the group for the tour in support of Giants. The band found renewed success and popularity starting with 2005's Don't Believe the Truth through 2008's Dig Out Your Soul and their supporting tours.

In August 2009, Noel Gallagher announced his departure from the band after a backstage altercation with Liam before a festival appearance. Liam Gallagher stated that the remaining members of the band would continue to record music, but ruled out the possibility of continuing as Oasis in February 2010, instead forming a new band called Beady Eye.