Retro-singing quartet Under the Streetlampâwhose members were recent leads in the Tony Award-winning Jersey Boysâcomes to the casino for a five-day engagement, entertaining crowds with rendition of classic doo-wop, Motown, and rock 'n roll favorites. WednesdayâFriday at 8 pm. Saturday and Sunday at 4 pm. L'Auberge Baton Rouge Event Center. $20. (800) 745-3000 or ticketmaster.com.