zac brown band is an american country/rock band based in atlanta, georgia. the lineup consists of zachary alexander "zac" brown (lead vocals, guitar), jimmy de martini (fiddle, vocals), john driskell hopkins (bass guitar, guitar, baritone guitar, banjo, ukulele, upright bass, vocals), coy bowles (guitar, keyboards), chris fryar (drums), clay cook (guitar, keyboards, mandolin, steel guitar, vocals), matt mangano (bass guitar), and daniel de los reyes (percussion).