Zac Brown Band became stars in the late 2000s on the strength of the number one country hits "Chicken Fried" and "Toes," songs that seemed like throwbacks to the country-rock of the '70s. For a while, ZBB continued in that vein, scoring another breezy, beachy hit with "Knee Deep" and underscoring their '70s singer/songwriter heritage with the warm, burnished ballad "Colder... Wikipedia