Background: Steven Noel Wariner was born on Christmas Day of 1954 in Noblesville, Indiana. Influenced at an early age by George Jones and Chet Atkins, Wariner started performing in his father's band, and later moved on to playing in local clubs. By age 17, he had been hired by Dottie West as a bass guitarist, and played on her single "Country Sunshine". He also worked with Glen Campbell, who he has cited as a major influence on his work.
Context: When Wariner signed to MCA Records in 1984, he began a string of consecutive Top 10 hits that lasted into the 1990s. The first of these was the No. 3 "What I Didn't Do", the first of three singles from his 1984 album One Good Night Deserves Another. Following it were the No. 8 "Heart Trouble" and his second No. 1, "Some Fools Never Learn". He also collaborated with pop singer Nicolette Larson on her Top 10 country hit "That's How You Know When Love's Right", her only Top 40 country single. It was also during this time that Steve recorded the theme song for the ABC television sitcom, Who's the Boss?. Wariner's version of "Brand New Life", used from 1986 to 1990, is the most widely recognized rendition of the song.  His next album, Life's Highway, accounted for two consecutive Number 1s in "You Can Dream of Me" and the title track, while all three singles from the next album (1987's It's a Crazy World) went to No. 1 as well: "Small Town Girl", "The Weekend" and "Lynda". Wariner also sang duet vocals on Glen Campbell's 1987 single "The Hand That Rocks the Cradle".  I Should Be with You was Wariner's fourth release for MCA. Although none of its singles went to Number 1, the album accounted for consecutive No. 2s in "Baby I'm Yours" and its title track. 1989's I Got Dreams produced the chart-toppers "Where Did I Go Wrong" and its title track, and by the end of the decade, Wariner had eight Number Ones on the country singles charts.  Laredo, released in 1990, was his final release for MCA. Lead-off single "The Domino Theory" peaked at No. 7, followed by the Mac McAnally co-write "Precious Thing" at No. 8 and "There for Awhile" at No. 17, his first single since 1984 not to reach Top 10. After this single, he exited MCA.
Question: Who was a part of MCA?

Answer:
collaborated with pop singer Nicolette Larson