Question:
Steven Siro Vai (; born June 6, 1960) is an American guitarist, composer, singer, songwriter, and producer. He was voted the "10th Greatest Guitarist" by Guitar World magazine, and has sold over 15 million records. A three-time Grammy Award winner and fifteen-time nominee, Vai started his music career in 1978 at the age of 18 as a transcriptionist for Frank Zappa, and joined his band from 1980 to 1983. He embarked on a solo career in 1983 and has released eight solo albums to date.
In 1978, Vai sent both a notated transcription of Frank Zappa's "The Black Page", and a recording of his college band, Morning Thunder, to Zappa. Impressed by this, Zappa responded by putting Vai on salary as a transcriptionist to transcribe his work, which included pieces from the Joe's Garage and Shut Up 'n Play Yer Guitar albums. After leaving Berklee College of Music and moving to California, Vai auditioned for and became a full-time member of Zappa's band, going on his first tour with Zappa in the fall of 1980. Zappa often referred to Vai as his "little Italian virtuoso", and Vai is frequently listed in the liner notes of Zappa's albums as having performed "stunt" or "impossible" guitar parts.  Vai was a featured artist on the 1993 release Zappa's Universe, and in 2006, Vai appeared as a special guest on Dweezil Zappa's Zappa Plays Zappa tour; both projects won Vai a Grammy Award.  After moving on from Zappa's employ in 1983, Vai bought a house in Sylmar, Los Angeles, where he built his first professional studio. During this period, Vai formed two bands (The Classified and 777) as well as writing and recording a large amount of music that was not originally intended for release. Out of this material, Vai compiled his first studio album Flex-Able. He created his own record label, Akashic Records (later Light Without Heat Records), which he used to take Flex-Able directly to distribution channels. Flex-Able was released in January 1984.  Vai began his rise to public acclaim in 1983 when, shortly before the release of Flex-Able, his composition "The Attitude Song" was published in Guitar Player magazine. The song centered itself on a main guitar riff in the time signature 7/16, played over a rhythm section centered in 4/4. Each following section of the song showcased a number of specialized techniques (such as two-handed tapping, whammy bar acrobatics, sweep picking, alternate picking, multi-part harmonies, and odd phrasing) used in angular and exaggerated ways that were unique to the song at the time. Interest from the public eye grew more so when Vai's song "Blue Powder" (a demonstration for the Carvin X100b amplifier) was published in Guitar Player as well, which showed the virtuoso side of Vai's compositional process. Also in 1986, Vai was cast in the blockbuster film Crossroads as the Devil's guitar player "Jack Butler". In the famous "duel scene" between Vai and Ralph Macchio's characters, Vai wrote and performed all guitar parts with the exception of the slide guitar, which was performed by Ry Cooder.  In between solo work, Vai replaced Yngwie Malmsteen in June 1984 as the lead guitarist of Alcatrazz, with whom he recorded the album Disturbing the Peace. Vai left shortly after the subsequent tour to join David Lee Roth's band.
Answer this question using a quote from the text above:

What did he record in the studio?

Answer:
Vai compiled his first studio album Flex-Able.


Question:
DJ Jazzy Jeff & the Fresh Prince was an American hip hop duo from West Philadelphia, Pennsylvania. Rapper Will Smith (the Fresh Prince) met disc jockey Jeff Townes (DJ Jazzy Jeff) in the 1980s, when they were both trying to make names for themselves in West Philadelphia's local hip hop scene. They had as a support live member Clarence Holmes (Ready Rock C) - who was not officially credited to the duo. Holmes left the group in 1990 and later sued unsuccessfully for earnings, claiming a breach of oral contract.
Their 1988 follow-up album, He's the DJ, I'm the Rapper, made them multi-platinum stars. Mostly recorded in the United Kingdom, the album was rap music's first double-vinyl LP release; it was also issued as a single cassette and CD. "Parents Just Don't Understand", the lead-off single, made them MTV household names and also gained the honor of the first Grammy for a hip hop/rap song, which was met with mixed feelings. Nevertheless, the single was a success, launching the group into even more mainstream stardom. The video showed Prince's misadventures of trying to get around his parents' strict rules in a very comical way, very much like their first single "Girls Ain't Nothing but Trouble". It gained much airplay on TV channels such as MTV, giving the group much attention. The song was played in an episode of The Fresh Prince of Bel-Air ("Someday Your Prince Will Be In Effect (Part 1)"), and referenced in two other episodes of the same series ("The Fresh Prince Project" and "Not With My Pig, You Don't").  Another single, "Nightmare on My Street", showcased a fictional confrontation with movie villain Freddy Krueger. Coinciding with the release of the fourth Nightmare on Elm Street film (1988's The Dream Master); New Line Cinema was not pleased. A video allegedly shot for the single was buried, and a disclaimer was hastily included on pressings of the album indicating that the record was not officially affiliated with any of the Nightmare films. (Ironically, Jive Records ended up releasing the soundtrack to the next film in the series, The Dream Child.) After this success, in 1988 the lead singles from Rock the House, including "Girls Ain't Nothing but Trouble", were re-released and changed a bit from their original 1985 release, with the outro referencing singles "Nightmare on My Street" and "Parents Just Don't Understand":  Jeff: Man, first your parents just don't understand.Will: Word, I know, man.Jeff: Then you have these crazy nightmares.Will: Why me? Why me?  Jeff reveals on track 19 of Skillz's Infamous Quotes mixtape that New Line Cinema approached Will & Jeff for a movie role which they ended up turning down. The film was House Party. The last single from He's the DJ, I'm the Rapper was "Brand New Funk" sampled a James Brown song and quotes it. In the song, the Fresh Prince explains how Jeff has brought in a tape that contains a very cool song that he cannot help but rap over, and how fans react to it. The song was well received by many hip hop fans due to its funk sound, lyrical spins, and the fact that it showed off more of the skills of Jazzy Jeff. The video was shot in black and white, showed live performance clips from a concert and featured 2 Damn Hype Dancing.
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what were some of their singles

Answer:
"Girls Ain't Nothing but Trouble".