L.A. previews September 28-October 4: Bennie Maupin, Front Line Assembly, Vicki Ray, Revocation, ROVA Orkestrova, Tribulation, Angel City Young Artists, Bobby Bradford/Satoko Fujii, Michael Vlatkovich, Scott Heustis.

* indicates an event in the seam-ripping Angel City Jazz Fest, Sept. 30-Oct. 14. Get the full lineup here.

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Fri.-Sat. Sept. 28-29 -- Windman Bennie Maupin (Miles, Herbie, McCoy) headhunts a rare trio, which means he'll be blowing his soulspirited head off. At the World Stage, 4321 Degnan Blvd., Leimert Park 90008; 9pm (two sets); $25 (advance tix recommended); www.theworldstage.org.

Fri.-Sat. Sept. 28-29 -- The Cold Waves VII fest features some of the top names of the industrial tech movement from a couple decades back, including Front Line Assembly and members of Skinny Puppy, Ministry, Revolting Cocks and Cubanate. Sick. At 1720, 1720 E. 16th St., downtown 90021; doors 8pm; $42 per day; all ages; full bar; food; www.1720.la.

Sat. Sept. 29 -- Vicki Ray, the most daring of new-music pianists, resumes her New Songs project with the aid of the extravagant Timur, Ted Hearne, Elissa Johnston and Carmina Escobar, interpreting compositions by Edison Denisov, Ted Hearne ("I Am Sick of Feeling"), Olivier Messiaen and Carmina Escobar. At Villa Aurora, 520 Paseo Miramar, Pacific Palisades 90272; 8pm; $25 tix here; shuttle service from Los Liones Drive & Sunset Blvd; (310) 454-4231.

Sat. Sept. 29 -- Boston Metal Blade artists Revocation keep up the whippounding beats; San Jose Relapse artists Exhumed blastbeat the old-skool grind; Pennsylvania Metal Blade artists Rivers of Nihil add some black-metal guitar melody to the torrent; Yautja churn, lurch & drive. At Union, 4067 W. Pico Blvd., L.A. 90019; 7pm; $20; all ages; www.unionclubla.com.

* Sun. Sept. 30 -- In tribute to late "conduction" innovator Butch Morris, ROVA Orkestrova augments ROVA Sax Quartet (Larry Ochs, Jon Raskin, Bruce Ackley, Steve Adams) with distinguished auxiliaries Lauren Baba, Eyvind Kang, Maggie Parkins, Mark Dresser, Jeff Parker, Tina Raymond and Steuart Liebig, under conductor Gino Robair. A big occasion, with big-eared improvisers who soar and turn on a dime. At Zebulon, 2478 Fletcher Drive, Frogtown 90039; 8pm; $15 tickets here; 21+.

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Tues. Oct. 2 -- Corpsepainted Swedes Tribulation croak the driving melodic metal. With Black Mare, Volahn. At the Lodge Room, 104 N. Ave. 56, Highland Park 90042; 8pm; $20; all ages; full bar; (323) 509-2861; www.lodgeroomhlp.com.

* Wed. Oct. 3 -- Angel City Fest's Young Artist Competition is down to the final four, each playing 20 minutes and watching the applause meter. At the Santa Monica Public Library, 601 Santa Monica Blvd., Santa Monica 90401; 7pm; free; smpl.org; (310) 458-8600.

* Thurs. Oct. 4 -- Pianist Satoko Fujii's spontaneous, heartbending trio with trumpeter Kappa Maki and drummer Yoshi Shutto would have been enough to merit a strong recommendation. But then I went, "Who are Silverscreen Sextet"? Well, they're cornetist Bobby Bradford, windman Vinny Golia, tuba player William Roper, windman Hafez Modirzadeh (each of whom I would have given a strong separate recommendation), playing the compositions of Bay Area drummer Vijay Anderson, with video by Tim Hicks, that's all. It's a small room, so you'd better grab advance tix for this one. At the World Stage, 4321 Degnan Blvd., Leimert Park 90008; 8pm; $20 tickets here; www.theworldstage.org.

Thurs. Oct. 4 -- Trombonist and truly original composer Michael Vlatkovich puts together a star quartet with guitarist Tom McNalley (who studied with Ornette), bassist Steuart Liebig (who travels both the earthways and the spaceways) and drummer Mayo Grout. At The Battery Books & Music, 26 S. Los Robles Ave., Pasadena 91101; 8pm; $5 suggested donation; (626) 376-9913.

Thurs. Oct. 4 -- Guitarist Scott Heustis leads a jaggedy postbop trio with drummer Bert Karl and bassist Tony Green. At Sunspace, 9683 Sunland Blvd., Shadow Hills 91040; 8-10pm; $10.