Inspired by the avant-garde guitar orchestras of Rhys Chatham and Glenn Branca, guitarist and composer Andras Fekete decided in 2011 to present a massive, annual guitar ensemble benefit as a way for local musicians to work together toward a positive goal. His second such event in D.C. is called “Boat Burning: Music for 70 Guitars.” Fekete now leads a seven-piece math-rock act called Boat Burning and it, along with dozens of local musicians and student performers from School Without Walls, will raise funds for music programs at the School Without Walls campuses in Northwest and Randle Highlands Elementary School in Southeast. Unlike most concerts, only a few musicians will be onstage—the majority of the guitarists will surround the audience on each wall. Participants, mostly rock and experimental artists, will include Luke Stewart from Laughing Man, plus members of the Caribbean, Harness Flux, Jack on Fire, Mittenfields, Tereu Tereu, Plums, and Tone. Chatham said he was inspired to create a multi-guitar symphony after hearing the Ramones; Fekete says his ensemble’s wave of sound will be similarly noisy and fun. Eschew earplugs at your own risk. The performance begins at 8 p.m. at the School Without Walls at Francis-Stevens, 2425 N St. NW. $10. (202) 724-4841. swwfs.org.