Watch Thomas Rhett's Laid-Back 'Happy Man' on 'Fallon'

Thomas Rhett began 2016 with what is likely to be one of the year's biggest country songs: the multi-week Number One "Die a Happy Man." Even after it fades from heavy rotation on radio, the second single from Rhett's ACM-nominated album Tangled Up is destined to be a wedding staple for years to come.Hear Nelly's Thomas Rhett Cover
Last night, Rhett visited The Tonight Show with Jimmy Fallon to sing the song and gave a relaxed performance that played up the casual soulfulness of its grooves.