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Photos   -  Country Couples' Duets

Faith Hill and Tim McGraw Onstage Faith Hill and Tim McGraw perform during The Andre Agassi Charitable Foundation's 9th annual Grand Slam for Children Fundraiser on Oct. 2, 2004, in Las Vegas.
Vince Gill and Amy Grant Onstage Vince Gill and Amy Grant onstage at The Waldorf Astoria on Nov. 12, 2002, in New York City.
Muhammad Ali's Celebrity Fight Night XII Trisha Yearwood and Garth Brooks sing onstage at Muhammad Ali's Celebrity Fight Night XII on March 18, 2006.
ACM Awards' Artist of the Decade Miranda Lambert and Blake Shelton perform together at the ACM's Artist of the Decade show on April 6, 2009.
Connie Smith and Marty Stuart Onstage Connie Smith and Marty Stuart perform onstage during Stagecoach Music Festival on April 27, 2013, in Indio, Calif.
Johnny and June Cash Onstage Johnny and June Cash perform on stage at Concertgebouw in 1972, in Amsterdam, Netherlands.
Clint Black and Lisa Hartman Onstage Clint Black and Lisa Hartman perform during the 35th ACM Awards on May 3, 2000, in Los Angeles