The Spring Fling lineup is officially out, and it features — surprise, surprise — 3LAU, Passion Pit and T-Pain.

The three-part lineup leaked online in March. The new website features bios of the headliners, as well as the three openers — Jamestown, The First Town in America, A Streetcar Named Funk, 9 Tigers — who won WYBC’s Battle of the Bands competition Tuesday night.

A quick roundup of the performers: T-Pain is a two-time Grammy-winner who’s famous for songs like “Buy U A Drank” and “Bartender” and for his use of auto-tune. Passion Pit hit it big with 2008’s “Sleepyhead.” 3LAU is a DJ and current student at Washington University in St. Louis who serves as the official DJ for

Gates to Old Campus will open at 2:30 p.m. Tuesday.