Brooks & Dunn is an American country music duo consisting of Kix Brooks and Ronnie Dunn, both vocalists and songwriters.
 The duo was founded in 1990 through the suggestion of Tim DuBois.
 Before the foundation, both members were solo recording artists.
 Brooks wrote number one singles for John Conlee, Nitty Gritty Dirt Band, and Highway 101; both he and Dunn also charted two solo singles a piece in the 1980s, with Brooks also releasing an album for Capitol Records in 1989.
 However, they began hitting the charts together in 1991.
The O'Kanes was an American country music duo, composed of Jamie O'Hara and Kieran Kane.
 Active between 1986 and 1990, the duo recorded three albums for Columbia Records and charted seven singles on the "Billboard" Hot Country Singles (now Hot Country Songs) charts, including the Number One "Can't Stop My Heart from Loving You".
 Kane charted seven singles of his own in the early 1980s, and O'Hara won a Grammy Award for co-writing "Grandpa (Tell Me 'Bout the Good Ol' Days)", a Number One hit for The Judds.
 After they disbanded in 1990, both members pursued solo careers, and Kane founded a record label called Dead Reckoning Records.
Tim Malchak (born June 25, 1957 in Binghamton, New York) is an American country music singer-songwriter.
 Malchak partnered with Dwight Rucker in 1982 to form the country music duo Malchak & Rucker.
 Together, they became the first black/white duo in country music history with a charting single when "Just Like That" debuted on the "Billboard" Hot Country Singles & Tracks chart in 1984.
The Judds were an American country music duo composed of Naomi Judd (born 1946) and her daughter Wynonna Judd (born in 1964).
 The duet signed to RCA Records in 1983 and released six studio albums between then and 1991.
 The Judds were one of the most successful acts in country music history, winning five Grammy Awards for Best Country Performance by a Duo or Group with Vocal, and eight Country Music Association awards.
 They also had 25 singles on the country music charts between 1983 and 2000, 14 of which went to number one and six more of which made top ten on the same chart.
 In 1985, the duo appeared on the PBS music program "Austin City Limits" during Season 10.
 They also appeared on the PBS children's show "Square One TV" many times.
You Do Your Thing is the fourth studio album by American country music duo Montgomery Gentry.
 It was released in 2004 (see 2004 in country music) and has been certified platinum by the RIAA.
 The album produced the duo's first Number One hit on the "Billboard" country music charts in "If You Ever Stop Loving Me"; other singles included the title track, "Gone", and "Something to Be Proud Of" (also a Number One).
One More Girl is a Canadian country music duo composed of McKillip actress-singers Carly McKillip and Britt McKillip, who are sisters.
 The duo signed to EMI Canada in 2008 and released their debut album, "Big Sky", in 2009.
 In 2010, they won the Rising Star award at the Canadian Country Music Association Awards.
 In August 2011, the duo signed with American pop music label Interscope Records.
Brother Phelps was an American country music duo formed by brothers Ricky Lee (guitar, vocals) and Doug Phelps (bass guitar, vocals).
 Prior to the duo's formation in 1992, both brothers were members of The Kentucky Headhunters, a Southern rock-influenced country rock band.
 In 1993, Brother Phelps charted with its debut single "Let Go", which reached a peak of No. 6 on the "Billboard" country music charts.
 In all, the duo charted six singles between 1993 and 1995 (although only one other single reached Top 40), in addition to recording two albums on Asylum Records.
 Brother Phelps disbanded in 1995, with Doug rejoining the Kentucky Headhunters as lead singer, and Ricky Lee assuming a solo career.
"Mama Don't Get Dressed Up For Nothing" is a song co-written and recorded by American country music duo Brooks & Dunn.
 It was released in September 1996 as the third single from their CD "Borderline", and their eighteenth single overall.
 The song received moderate success on the US Country chart, where it peaked at number 13, while it was a number 8 hit in Canada.
 It was the first single the duo released that missed the US country top 10, breaking a streak of 17 straight top 10 entries; the next eight singles Brooks and Dunn released after this would also make the country top 10.
 This is the fourth single to feature Kix Brooks on lead vocals instead of Ronnie Dunn.
 Kix and Ronnie wrote this song, along with Don Cook.
Blue County is the self-titled debut album of American country music duo Blue County, released in 2004 (see 2004 in country music) on Curb Records.
 The album's debut single, "Good Little Girls", peaked at #11 on the "Billboard" Hot Country Singles & Tracks (now Hot Country Songs) charts.
 Also released from this album were "That's Cool" (#24 on the country charts), "Nothin' but Cowboy Boots" (#38) and "That Summer Song" (#53).
 After these singles, the duo released two more singles for an unreleased second album, before exiting Curb in 2007.
Johnny and Jonie Mosby was an American country music duo composed of Johnny Mosby and Jonie Mosby, who were husband and wife.
 The duo charted seventeen times on the country music charts between 1963 and 1973, in addition to releasing six albums for various labels.
 Five of the duo's singles made top 20 on the Hot Country Songs charts, with the highest peaks being "Trouble in My Arms" and "Just Hold My Hand", both at number twelve.

Question: Which country music duo was founded in 1990?
Answer: Brooks & Dunn