During the second concert of the tour in Rosemont , Illinois on September 5 , 2014 , Kelly Clarkson made a surprise appearance to perform the duet " PrizeFighter " , alongside Yearwood ( Brooks normally sings Clarkson 's verses ) . Clarkson also made an appearance and sang the duet once again at the concert in Atlanta on September 19 , 2014 . Brooks made national headlines in November 2014 after noting a fan 's sign at a concert in Minneapolis . The sign , reading " Chemo this morning . Garth tonight . Enjoying the dance . " , caught Brooks ' attention during his performance of " The Dance " . After getting emotional , Brooks expressed his support . Later that same month , Brooks performed " People Loving People " on the American Music Awards of 2014 live via satellite from the concert in Greensboro , North Carolina . On the second to last concert of Brooks ' six-night residency in Boston on January 25 , 2015 , Lee Brice joined him on stage and the two performed " More Than a Memory " . Brice also opened for Brooks during his first show in Bossier City on July 29 , 2016 and again performed the duet during Brooks ' set
American Music Awards of 2014
American Music Awards of 2014
The Garth Brooks World Tour (2014–17)