It's apt that there's a song on Grand Isle, the new record by Steve Riley & the Mamou Playboys, named "Non, je ne regrette rien." That's "no regrets," if you don't parlez le franais. These Southern Louisiana homeboys are famed for their expertise at combining traditional Cajun licks with fiery performances, a pairing that leaves very few regrets for those in attendance. Riley and crew are as likely to get the crowd moving with a two-step, a waltz or some wild accordion gambit—which is why Duke Gardens is sectioning off some space especially for dancing. Tickets to the 7 p.m. show are $15 general admission, $10 for Duke employees, $5 for Duke students and free for ages 12 and under. —Ashley Melzer