Grizzly Bear and Wolfgang Gartner have joined the lineup for Gulf Shores, AL’s The Hangout Festival. The beach and music festival will take place from May 17-19. Other confirmed acts include: Tom Petty & The Heartbreakers, Stevie Wonder, Kings of Leon, Trey Anastasio Band, The Shins, Bassnectar, Yeah Yeah Yeahs, The Black Crowes, Big Gigantic, moe., Gov’t Mule, ALO, Dirty Projectors and many others. The festival’s current lineup is available here.