Mutual Halloween Edition: Ma Sha, Ultrabruma, Maddog

Mutual’s Halloween edition is a warehouse night aimed at bass. Ma Sha headlines. Ultrabruma, Brenda and Maria Manuela’s project, plays Boston for the first time, between bass and techno. Maddog is on the bill too, leaning techno. Costumes are encouraged. The promoters say not to overdress, because the room gets hot. It is 21+. Tickets are $20 to $50. The warehouse address is not on the listing.