This Georgia-based sextet owes as much of its stylistic diversity to reggae singers, soul crooners and rock bands as it does to Charlie Daniels and his ilk. On Zac Brown Band’s new album, the group routinely and capably flits between genres, often in the same song. ZBB is equally adept at fiddle-breaking barnburners like “Whiskey’s Gone” and “Who Knows” and lyrically profound tunes like “Colder Weather.” On the happy-go-lucky “Knee Deep,” which sounds like a derivation of the band’s own hit “Toes,” Jimmy Buffett joins them in a personal paradise where the ocean is my only medication. “Martin” is a sweet tribute to the power of music, while the band revels in the life of a traveling musician on “I Play the Road,” complete with an explanation to a young daughter who wonders, Where do you go when you leave me all these nights with a guitar in your hands. Alan Jackson gives almost fatherly advice on “As She’s Walking Away,” and the band’s vibrant harmonies and distinguished musicianship complement Zac Brown’s warm, grizzled voice throughout this generous 15-track disc.  —jessica phillips