It’s hard to read “Debacle Festival” and not hear it as an inversion of next month’s Decibel Festival. Swapped consonants aside, it’s not a bad point of contrast: Both are local, both offer up decidedly non-rock’n’roll musics, but while Decibel is high tech and high polish, Debacle is noisy, lo-fi, and DIY. Over three days, at scruffy venues like the Black Lodge and the Josephine, Debacle—the brainchild of Samuel Melancon, who runs a corresponding label and performs with the band Megabats—showcases 35 mostly local, mostly experimental acts, from the austere void-surfing folk of Tiny Vipers (Friday at the Black Lodge) to the bristling black noise of Blue Sabbath Black Cheer (Sunday at the Josephine) to the unpredictable, jazz and prog influenced electronic jams of Brain Fruit, who headline tonight’s show at the Lo-Fi. With Konntinent, Operative, Golden Retriever, Brother Raven, Plankton Wat, Panabrite. ERIC GRANDY

Sat., Aug. 20, 8:30 p.m., 2011