IN: Yusuf Islam (born Steven Demetre Georgiou; 21 July 1948), commonly known by his former stage name Cat Stevens, is a British singer-songwriter and multi-instrumentalist. His 1967 debut album reached the top 10 in the UK, and the album's title song "Matthew and Son" charted at number 2 on the UK Singles Chart. Stevens' albums Tea for the Tillerman (1970) and Teaser and the Firecat (1971) were both certified triple platinum in the US by the RIAA. His musical style consists of folk, pop, rock, and Islamic music.

Georgiou began to perform his songs in London coffee houses and pubs. At first he tried forming a band, but soon realised he preferred performing solo. Thinking that his given name might not be memorable to prospective fans, he chose the stage name Cat Stevens, in part because a girlfriend said he had eyes like a cat, but mainly because he said, "I couldn't imagine anyone going to the record store and asking for 'that Steven Demetre Georgiou album'. And in England, and I was sure in America, they loved animals." In 1966, at age 18, he impressed manager/producer Mike Hurst, formerly of British vocal group the Springfields, with his songs and Hurst arranged for him to record a demo and then helped him get a record deal. The first singles were hits. "I Love My Dog", charting on the UK Singles Chart at number 28, and "Matthew and Son", the title song from his debut album, went to number 2 in the UK. "I'm Gonna Get Me a Gun" was his second UK top 10, reaching number 6, and the album Matthew and Son reached number 7 on the UK Albums Chart. The original version of the Tremeloes' hit "Here Comes My Baby" was written and recorded by Stevens.  Over the next two years, Stevens recorded and toured with an eclectic group of artists ranging from Jimi Hendrix to Engelbert Humperdinck. Stevens was considered a fresh-faced teen star, placing several single releases in the British pop music charts. Some of that success was attributed to the pirate radio station Wonderful Radio London, which gained him fans by playing his records. In August 1967, he went on the air with other recording artists who had benefited from the station to mourn its closure.  His December 1967 album New Masters failed to chart in the United Kingdom. The album is now most notable for his song "The First Cut Is the Deepest", a song he sold for PS30 to P. P. Arnold that was to become a massive hit for her, and an international hit for Keith Hampshire, Rod Stewart, James Morrison, and Sheryl Crow. Forty years after he recorded the first demo of the song, it earned him two back-to-back ASCAP "Songwriter of the Year" awards, in 2005 and 2006.
QUESTION: Who was the first producer
IN: 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 1970s Corea started working with vibraphonist Gary Burton, with whom he recorded several duet albums for ECM, including 1972's Crystal Silence. They reunited in 2006 for a concert tour. A new record called The New Crystal Silence was issued in 2008 and won a Grammy Award in 2009. The package includes a disc of duets and another disc with the Sydney Symphony Orchestra.  Toward the end of the 1970s, Corea embarked on a series of concerts and two albums with Hancock. These concerts were presented in elegant settings with both pianists dressed formally and performing on Yamaha concert grand pianos. The two traded playing each other's compositions, as well as pieces by other composers such as Bela Bartok. In 1982, Corea performed The Meeting, a live duet with the classical pianist Friedrich Gulda.  In December 2007 Corea recorded a duet album, The Enchantment, with banjoist Bela Fleck. Fleck and Corea toured extensively for the album in 2007. Fleck was nominated in the Best Instrumental Composition category at the 49th Grammy Awards for the track "Spectacle".  In 2008 Corea collaborated with Japanese pianist Hiromi Uehara on the live album Duet (Chick Corea and Hiromi). The duo played a concert at Tokyo's Budokan arena on April 30.  In 2015 Corea reprised the duet concert series with Hancock, again sticking to a dueling-piano format, though both also had synthesizers at their station. The first concert in this series was played at the Paramount Theatre in Seattle, and featured improvised music along with iconic songs from each of the duo and standards from other composers.
QUESTION:
What did they put out?