Question: Cinema were a short-lived progressive rock band started by former members of an English rock band formed in London in and notabley regarded as what?
Context: Strawbs (or The Strawbs) are an English rock band founded in 1964.  Although the band started out as a bluegrass group they eventually moved on to other styles such as folk rock, progressive rock, and (briefly) glam rock. 3 (sometimes referred to as Emerson, Berry & Palmer) were a short-lived progressive rock band formed by former Emerson, Lake & Palmer members Keith Emerson and Carl Palmer and American multi-instrumentalist Robert Berry in 1988. Yes are an English rock band formed in London in 1968 by singer Jon Anderson, bassist Chris Squire, guitarist Peter Banks, keyboardist Tony Kaye, and drummer Bill Bruford.  The band have undergone numerous formations throughout their history; nineteen musicians have been full-time members.  Since June 2015, it has consisted of guitarist Steve Howe, drummer Alan White, keyboardist Geoff Downes, singer Jon Davison, and bassist Billy Sherwood.  Yes have explored several musical styles over the years, and are most notably regarded as progressive rock pioneers. The following is a list of artists who have released at least one album in the progressive rock genre.  Note that individuals are included "only" if they recorded or performed progressive rock as a solo artist, regardless of whether they were a member of a progressive rock band at any point.  For instance, Robin Trower never again performed in a progressive rock style after his departure from Procol Harum, so he is not listed here.  Rick Wakeman is, because he recorded a number of solo albums in a progressive rock vein.  Individual band members who have never recorded solo, such as John Myung of Dream Theater, also are not listed. Qango were a short-lived progressive rock band, a spin-off from Asia.  In 1999, an attempt was made at a partial reunion of the progressive rock supergroup Asia involving John Wetton (bass, vocals), Carl Palmer (drums) and Geoff Downes (keys), with David Kilminster to be on guitar.  However, Downes withdrew from plans, choosing to stick with John Payne in their Asia line-up.  Wetton and Palmer instead formed Qango with Kilminster and John Young on keys (who had briefly replaced Downes in Asia in 1989).  The band's live set was based on songs by Asia and Palmer's former band Emerson, Lake & Palmer. Cinema were a short-lived progressive rock band started in January 1982 by former Yes members Alan White and Chris Squire, with guitarist Trevor Rabin.  The previous year, Squire and White had formed the abortive band XYZ with former Led Zeppelin guitarist Jimmy Page.  Cinema had plans to release their debut album in 1983, and were working on a number of songs, most of which had been written by Rabin. Deep Purple are an English rock band formed in Hertford in 1968.  The band is considered to be among the pioneers of heavy metal and modern hard rock, although their musical approach changed over the years.  Originally formed as a progressive rock band, the band shifted to a heavier sound in 1970.  Deep Purple, together with Led Zeppelin and Black Sabbath, have been referred to as the "unholy trinity of British hard rock and heavy metal in the early to mid-seventies".  They were listed in the 1975 "Guinness Book of World Records" as "the globe's loudest band" for a 1972 concert at London's Rainbow Theatre, and have sold over 100 million albums worldwide. Joe Lynn Turner (born Joseph Arthur Mark Linquito, August 2, 1951) is an American singer, guitarist, songwriter, and producer.  He is known for his work in the hard rock bands Rainbow and Deep Purple.  During his career, Turner fronted and played guitar with pop rock band Fandango in the late 1970s; and in the early 80s, he became a member of Rainbow, fronting the band and writing songs with guitarist, Ritchie Blackmore and bassist, and producer, Roger Glover.  After Rainbow had disbanded (the first time) in March 1984, he pursued a solo career, released one album, Rescue You, and then later did session work, singing background vocals for the likes of Billy Joel, Cher, and Michael Bolton.  On the advice of Bolton, Turner began recording jingles for radio and television.  Other songs he had composed or through collaboration with songwriters like Desmond Child and Jack Ponti were being recorded and released by international recording artists Jimmy Barnes, Lee Aaron, and Bonfire.  Turner had a short-lived association with neoclassical metal guitarist Yngwie Malmsteen and then Deep Purple.  From the mid-1990s, he resumed his solo career, releasing an additional nine studio and two live recordings.  Turner did other session work, appearing as lead vocalist on tribute albums and working on projects involving various musical groups including progressive rock band Mother's Army; Bulgarian hard rock band Brazen Abbot; funk rock duo Hughes Turner Project; and classic rock/ progressive rock band Rated X.  In 2006, Frontiers Records approached Turner to become involved with the AOR side project Sunstorm.  By 2016, four albums under the Sunstorm name had been released.  That same year, Turner released "The Sessions" via Cleopatra Records featuring a veritable who's who of classic rock royalty as guest musicians, before resuming his seemingly constant touring schedule back in Europe Genesis were an English rock band formed at Charterhouse School, Godalming, Surrey in 1967.  The most commercially successful and longest-lasting line-up consisted of keyboardist Tony Banks, bassist/guitarist Mike Rutherford and drummer/singer Phil Collins.  Significant former members were original lead singer Peter Gabriel and guitarist Steve Hackett.  The band underwent many changes in musical style over its career, from folk music to progressive rock in the 1970s, before moving towards pop at the end of the decade.  They have sold 21.5 million RIAA-certified albums in the United States and their worldwide sales are estimated to be between 100 million and 150 million. Katatonia is a Swedish metal band formed in Stockholm in 1991 by Jonas Renkse and Anders Nyström.  The band started as a studio-only project for the duo, as an outlet for the band's love of death metal.  Increasing popularity lead them to add more band members for live performances, though outside of the band's founders, the lineup was constantly changing, revolving door of musicians throughout the 1990s, notably including Mikael Åkerfeldt of the band Opeth for a period.  After two death/doom albums, "Dance of December Souls" (1993) and "Brave Murder Day" (1996), problems with Renkse's vocal cords coupled with new musical influences lead the band away from the screamed vocals of death metal to a more traditional, melodic form of heavy metal music.  The band released two more albums, "Discouraged Ones" (1998) and "Tonight's Decision" (1999), before settling into a stable quintet lineup for all of 2000's.  The band released four more albums with said lineup - "Last Fair Deal Gone Down" (2001), "Viva Emptiness" (2003), "The Great Cold Distance" (2006), and "Night Is the New Day" (2009), with the band slowly moving away from their metal sound while adding more progressive rock sounds to their work over time.  While lineup changes started up again into the 2010s, Renkse and Nyström persisted, and the band continued to release music, including "Dead End Kings" (2012) and their most recent, their tenth studio album, "The Fall of Hearts", released on May 20, 2016.
Answer: progressive rock pioneers