Article continues below advertisementKeith Urban and Nicole Kidman's split is still making waves - and now an old song lyric is at the center of the drama.Article continues below advertisementA resurfaced video from one of Urban's recent shows shows the musician switching up the words to "The Fighter," the 2016 ballad he originally wrote about Kidman. Instead of singing, "When they're tryna get to you, baby I'll be the fighter," the 57-year-old dad of two belted out, "When they're tryna get to you, Maggie I'll be your guitar player.