Answer the question at the end by quoting:

Ratt is an American heavy metal band that had significant commercial success in the 1980s, with their albums having been certified as gold, platinum, and multi-platinum by the RIAA. The group is perhaps best known for hit singles such as "Round and Round" and "Lay It Down", tracks that ranked on Billboard's top 40 at No. 12 and No. 40, respectively, as well as other songs such as "Wanted Man", "You're in Love" and "Dance".
The origins of Ratt go as far back as 1973 in Hollywood, with a band called Firedome, founded by singer Stephen Pearcy with a few friends. In 1974 the band broke up, with Pearcy forming Crystal Pystal. The name Crystal Pystal was later changed to Buster Cherry, which turned into Mickey Ratt in 1976.  Guitarist Robbin Crosby in those same years had been a member of the bands Metropolis with Tommy Asakawa and Parramore McCarty, Xcalibur, Phenomenon, Secret Service and Mac Meda with Askawa.  Mickey Ratt went through various line-up changes. Members included guitarists Jake E. Lee, Chris Hager, Paul DeNisco, and Bob DeLellis, bassists Matt Thorr, Tim Garcia, Mike New and Dave Jellison, and drummers John Turner, and Bob Eisenberg. The various Mickey Ratt line-ups released several demos compilations and a live concert recording.  In 1980, to increase their chances of landing a recording contract with a major label, the band recorded a single called "Dr. Rock" / "Drivin' on E", which was given to fans at their early Los Angeles club shows.  In 1981, the band's name was shortened to Ratt. Crosby played with the band later in the year. Guitarist Warren DeMartini, recommended by Lee, joined the band in January 1982. Bassist Gene Hunter (from Jake E. Lee's Teaser) and drummer Khurt Maier (who played drums on the early "Tell the World" recording featured on the compilation Metal Massacre I) temporarily played in Ratt before the arrival of Bobby Blotzer (ex-Vic Vergeat) and Juan Croucier (previously with Dokken, and musically active since 1973). DeMartini was only 18 years old when he was called up to Los Angeles to join Ratt. At the time he was attending college in San Diego and was reluctant to drop out to join a band that had, so far, had only limited success. Marq Torien briefly replaced DeMartini, though he returned in time for the recording of their first EP, later in 1982.

was it an album or a single?

single



Answer the question at the end by quoting:

Armando Anthony "Chick" Corea (born June 12, 1941) is an American jazz pianist/electric keyboardist and composer. His compositions "Spain", "500 Miles High", "La Fiesta" and "Windows", are considered jazz standards. As a member of Miles Davis's band in the late 1960s, he participated in the birth of jazz fusion. In the 1970s he formed the fusion band Return to Forever.
In the early 1970s, Corea took a profound stylistic turn from avant-garde to a crossover jazz fusion style that incorporated Latin jazz with Return to Forever. Named after their eponymous 1972 album, the band relied on both acoustic and electronic instrumentation and drew upon Latin American styles more than on rock music. On their first two records, Return to Forever consisted of Flora Purim on vocals, Joe Farrell on flute and soprano saxophone, Airto Moreira on drums , and Stanley Clarke on double bass. Drummer Lenny White and guitarist Bill Connors later joined Corea and Clarke to form the second version of the group, which expanded the earlier Latin jazz elements with a more rock and funk-oriented sound inspired by the Mahavishnu Orchestra, led by his Bitches Brew bandmate John McLaughlin. This incarnation of the group recorded the album Hymn of the Seventh Galaxy, before Connors' departure and replacement by Al Di Meola, who was present on the subsequent releases Where Have I Known You Before, No Mystery, and Romantic Warrior.  Corea's composition "Spain" appeared on the 1972 Return to Forever album Light as a Feather. This is probably his most popular piece, and it has been recorded by a variety of artists. There are also a variety of recordings by Corea himself. These included an arrangement for piano and symphony orchestra that appeared in 1999 and a collabration with vocalist Bobby McFerrin on the 1992 album Play. Corea usually performs "Spain" with a prelude based on Joaquin Rodrigo's Concierto de Aranjuez (1940), which earlier received a jazz orchestration on Davis and Gil Evans' Sketches of Spain.  In 1976, he issued My Spanish Heart, influenced by Latin American music and featuring vocalist Gayle Moran (Corea's wife) and electric violinist Jean-Luc Ponty. The album combined jazz and flamenco, supported by Minimoog backup and a horn section.

What album first featured Corea's new style?
Return to Forever.