This Saturdayโ€™s Yes, Indeed! festival on Mid-Main runs two or three dozen deep with Houston acts either just now getting off the ground or who have been that way for quite some time. But to cap off the evening, organizers reached out to Brownout, the long-running offshoot of Grammy-winning Austin Prince favorites and cumbia masters Grupo Fantasma. Brownout has been a choice commodity within Latin-funk circles for several years thanks to albums like Oozy (2012), Aguilas and Cobras (2009, plus a 2010 remix album) and Homenaje (2007). Except Yes, Indeed! is not getting Brownout per se but Brown Sabbath, their shaggier alter ego of sorts exclusively devoted to the music of the boys from Birmingham (England).

Brown Sabbath has seen a lot of mileage for something that was once supposed to be a one-night stand in late 2013. They appeared on the main stage of the Bonarroo festival earlier this summer, and last year released a seven-song EP on soul-jazz great Roy Ayers’ label Ubiquity Records. (Houston-area native Alex Maas, front man for Austin psych-rock bigwigs the Black Angels, sings lead on “Iron Man,” “N.I.B.” and “Hand of Doom”; the band says a second volume is due out soon.) As Brownout co-founder and guitarist Beto Martinez explains it, the original idea was to do a different theme at each of the last four nights of the group’s residency at Frank, the since-closed Austin hot-dog cafe/music venue; the others were James Brown (โ€œBrown Caesarโ€), hip-hop (โ€œFear of a Brown Planetโ€) and Breakin 2: Electric Boogaloo (โ€œBrownout 2โ€). Sabbathโ€™s monolithic riffs and plodding tempos may not strike all that many people as funky, but Martinez explains that’s only because they’re not thinking deeply enough.

โ€œThing is, Sabbath is inherently funky and things came together smoothly and much better than we anticipated,โ€ he says. โ€œWe love the music and are huge fans, so we love going out there and rocking it out.โ€

So much so, he adds, that itโ€™s somewhat difficult for Brown Sabbath to choose their favorite songs to play live; โ€œthey all rock and are a blast to play,โ€ Martinez admits. But we asked him anyway.

โ€œINTO THE VOIDโ€

One of the heaviest riffs ever written. We do it as an instrumental so the band gets to go full-bore and rock out on this one. It’s also epic with all the different sections.

โ€œCHILDREN OF THE GRAVEโ€

Also archetypal riffage, defining “heavy” for all who came after. The vocal melody is killer and the slow death march riff in the middle with the crowd chanting hey is a highlight.

โ€œN.I.B. (NATIVITY IN BLACK)โ€

Who doesn’t love yelling “Oh Yeah!โ€?

โ€œSWEET LEAFโ€

Stoner anthem and we throw in a nod to the Beastie Boys on the verse that is fun as hell.

โ€œSNOW BLINDโ€

Another drug anthem, we really break it down on the slow riff before the solo; when it finally hits you feel like youโ€™re in a cartoon space-plane blasting off to psychedelic galaxies in Heavy Metal.

Chris Gray is the former Music Editor for the Houston Press.