After announcing last Monday that Fitz and the Tantrums will headline this year’s spring W.I.L.D., Team 31 has completed the concert’s lineup with less than three weeks to spare.

On Wednesday, the group revealed that indie noise pop band Dum Dum Girls will be one of the openers for Fitz and the Tantrums, and recently has since announced through its Twitter feed that student band Petra and the Priorities will round out April 27’s W.I.L.D. concert.

The California-based band Dum Dum Girls is the project of singer/songwriter Dee Dee, backed by lead guitarist Jules, drummer Sandy and bassist Malia. All members also contribute vocals to the act’s lo-fi, ’60s-inspired tunes.

The Dum Dum Girls have garnered indie critical acclaim ever since Dee Dee began releasing records under the band name in 2008. Since then Dee Dee has compiled a full touring band and released two albums: “I Will Be” in 2010, and “Only in Dreams” in 2011. Both records were produced by Richard Gottehrer, who has previously worked with Blondie and the Go-Gos. The act has cited bands like The Ramones, The Ronettes, The Cure and Iggy Pop as major influences. One should expect the act to bring its own unique summery blend of brash girl-punk, appealing harmonies and gritty guitars to the Brookings Quadrangle stage this April.

Petra and the Priorities should bring a very different sound as they open up the W.I.L.D. festivities. The student band is relatively new, formed in February of this year through the Washington University Jazz Program. The act comprises lead vocalist Petra Greenidge, guitarist Drew Cooper, keyboardist Jeff Stephens, bassist Chris Hiller, saxophonist Tim Greer and drummer Dylan French. The act’s signature sound is a blend of smooth jazz and lead singer Greenidge’s talented vocals. The band is fresh off of an opening performance for Gym Class Heroes at this weekend’s WUStock concert, so it already has experience opening up to a Wash. U. crowd. The group’s presence in the W.I.L.D. line-up should provide some more variety to the proceedings and help to craft an upbeat atmosphere perfect for a spring concert.

W.I.L.D. will take place in Brookings Quadrangle on April 27. Students will be allowed to enter starting at 5:30 p.m.