Justin Bieber’s all grown up and going to Phish concerts now. The singer and his girlfriend, Selena Gomez, went to a Phish concert at the Long Beach Arena on Aug. 15. Bieber was brought by his musical director who had wanted the pop star to check out the band’s music for some time. After the first set, Bieber and Gomez got to go backstage to meet the band and the members’ families. Bieber wore a green tie-dye T-shirt and a Philadelphia Flyers cap to the event. The couple had been expected to leave after intermission, but they ended up staying through three-quarters of the second set.