UFO are an English hard rock band formed in 1969. UFO became a transitional band between early hard rock and heavy metal and the New Wave of British Heavy Metal. UFO's influence was strongly felt in the 1980s heavy metal scene and they have been cited as a primary influence of Steve Harris of Iron Maiden, Kirk Hammett of Metallica, Dave Mustaine of Megadeth, Frank Hannon of Tesla, and Mike McCready of Pearl Jam, among others.
UFO were ranked #84 on VH1's 100 Greatest Artists of Hard Rock
Part of UFO's early heavy metal work was strongly influenced by space rock (their second album, including a 26-minute long title track and a 19-minute long opus "Star Storm", even was subtitled "One Hour Space Rock") that was modestly popular at the time, but the band soon realised the style was somewhat limited. In January, 1972 Mick Bolton left the group, and UFO set out to find a guitarist capable of providing the band with a more standard rock sound.
The band later released Force It (July, 1975) and No Heavy Petting (May, 1976) and toured extensively, which brought UFO increased visibility with American audiences and made them huge stars in England.
After the band experimented with keyboards during the recording sessions of Force It (Chick Churchill from Ten Years After played them), a keysman Danny Peyronel (previously in Heavy Metal Kids) joined the line-up in August, 1975, but the next summer he left to form The Blue Max. In July, 1976 the band recruited keyboardist and second guitarist Paul Raymond (born Paul Martin Raymond, 16 November 1945, in St Albans, Hertfordshire) (ex-Plastic Penny) from Savoy Brown to make 1977's Lights Out. Lights Out was the pinnacle of UFO's studio career and is considered a genuine 1970s rock classic, containing songs such as "Too Hot To Handle", "Lights Out", "Alone Again Or" and the 7-minute opus "Love To Love". With Lights Out, the band received substantial critical acclaim.
With their new-found success, the band went back into the studio to record Obsession in 1978. Whilst not as successful as its predecessor, Obsession still contained several popular tracks, such as; "Cherry" and "Only You Can Rock Me".
Later that year, the band went on tour and recorded the live album, Strangers In The Night. Strangers was a critical and commercial success reaching Number 8 in the UK album charts in February 1979.
In February, 1982 the band released Mechanix. It contained the popular song, "Back Into My Life", which was a minor hit in the USA. Later that year, founding member, Pete Way left the band to form Fastway with Mötorhead guitarist Eddie Clarke and then his own Waysted. He was replaced by Talas bassist, Billy Sheehan. UFO released Making Contact in 1983, but the album was a critical and commercial failure. Thus, that May, UFO decided to disband.
This proved to be a short hiatus as, two years later, Mogg assembled a new UFO line-up and released Misdemeanor. This was followed by the 1988 EP Ain't Misbehavin'. Despite the renewed activity of the band, neither release was financially successful and they disbanded again.
Phil Mogg and Pete Way continued working together, however, and released two albums under the Mogg/Way name in the late 1990s, - Edge of the World and Chocolate Box. In 2003 they released The Plot with drummer Jeff Martin.
During this period, bassist Pete Way would release his solo debut "Amphetamine" and the live release Pete Way (Alive In Cleveland).
In 2004 UFO released You Are Here with Jason Bonham on drums and guitar maestro Vinnie Moore. As a follow up for the tour, UFO record their live set and release a double-DVD recording titled Showtime (2005) along with a double live CD on SPV in November 2005, mixing a number of re-recoded studio songs, some of which can be viewed on YouTube.
In November 2005, Andy Parker returned to the band to play in the Piorno Rock Festival in Granada, Spain.
UFO's nineteenth studio album, titled The Monkey Puzzle, was released in Europe on September 25, 2006 and on the following day in the United States

Andy Parker recently returned in early 2007 after recovering from proper medical surgery on his leg. He and the rest of the band gave thanks to all who helped; most importantly, Jason Bonham (Andy's replacement).
In January 2008 they re-released three albums (Phenomenon, No Heavy Petting and Force it) which include bonus tracks and live versions of select songs. Reissues of Lights Out and Obsession followed in July.
Bassist Pete Way was unable to get a work visa to enter the United States for the band's 2008 tour.
For these shows, Rob De Luca (Sebastian Bach Band) is filling in the bass player slot.
As of July 2008, according to Metalunderground.com, UFO have begun writing new material for their next album due for release sometime in 2009. While no further more information is currently available, they plan to return to the studio in late 2008/early 2009 to begin recording it.