Sean Nelson says, "Anya Marina makes the good kind of pop." See her live on Saturday. Shervin Lainez

Welcome, once again, to our roundup of the best live music Seattle has to offer this weekend. We've got improvised music of all varieties, informal classical music, smart pop, a tribute to the iconic Allen Toussaint, and more! As always, here's the rest of our complete music calendar for the weekend.

FRIDAY
CLASSICAL/EXPERIMENTAL: Seattle Improvised Music Festival
Featuring three musicians from the East Coast—alto saxophonist Matana Roberts, bassoonist Leslie Ross, and vocalist Carol Genetti—and 11 Washington-based improvisers (including trumpeter Leslie Dalaba, saxophonist Kate Olson, bassist John Seman, and guitarist Dennis Rea), SIMF places them in different duo and quartet configurations throughout the three-day event. DAVE SEGAL

CLASSICAL: [UNTITLED] 2
Seattle Symphony's late-night concerts in the lobby of Benaroya Hall are wrapped in windows, so the sparkling night city is their backdrop. This time, the music relates to the urban avant-garde of New York in the middle of the 20th century, when Christian Wolff, the composer, was hanging out with Merce Cunningham, John Cage, and the artist Robert Rauschenberg. JEN GRAVES

METAL: Act of Defiance
It’s been a crazy year-and-a-half for Chris Broderick and Shawn Drover. They had been touring the world together for years alongside guitar legend Dave Mustaine in the current lineup of Megadeth—until one day in late 2014 when both members decided to give up the international dates and fame of playing in one of the biggest metal bands. Soon after, guitarist Matt Bachand and vocalist Henry Derek joined the pair to form Act of Defiance. KEVIN DIERS

DJ: Research
The Research crew’s name isn’t a misnomer: They do the legwork to assure that you’ll do the footwork at their events. Their high-quality bookings continue with New Jersey’s Joey Anderson, who creates some of the modern era’s most interesting and strange house music. DAVE SEGAL

SATURDAY
ROCK/POP: Charlatan and guests
On his 2013 self-titled album, Charlatan made a boldly abrasive style of shoegaze rock that used drum machines, guitar feedback, and boisterously sullen vocals like a certain Scottish group whose name contains two biblical figures. Supermax refines that black-leather-jacketed approach and brings the gloomily radiant melodies into sharper relief. DAVE SEGAL

METAL: Black Sabbath
Some bands will never stop being cool. Even though well-dressed and idealess imitators keep eroding the institution of massive ’70s rock bands, Black Sabbath are still awesome. The satanic imagery, Tony Iommi’s riffs, Geezer Butler’s hysterical bass lines, and Ozzy’s paranoid caterwaul—they all just work together as a seamless whole, and neither Ozz’s reality show nor officially licensed shirts at Wal-Mart have stymied that fact. JOSEPH SCHAFER

ROCK/SOUL: Tribute to Allen Toussaint
There are few folks with the cultural stature of Mr. Allen Toussaint. For over 50 years, he wrote, produced, and arranged while continuing as a working musician with, for, and to, well, everybody who was anybody in the music biz. He began his career in New Orleans at age 17 and was soon sussing out talent and producing for local labels. He also produced many of the songs that became the foundations of rock and soul music. MIKE NIPPER

BRITPOP: Super Furry Animals
Think of Super Furry Animals as the Welsh Blur. Gruff Rhys and company are Britpop traditionalists, but they slightly alter the template. They value melody, but also love to throw in weird textures and playful sound effects into their classicist tunes. DAVE SEGAL

POP: Anya Marina and Panic is Perfect
Anya Marina makes the good kind of pop—the kind that sounds like a crafty choice, as opposed to a last resort. Her new album, Paper Plane, explores the pop spectrum, at times like Cheap Trick fronted by Blossom Dearie, at others conjuring the twee multiverse of the Softies, Tiger Trap, bis, etc. SEAN NELSON

SUNDAY
ROCK/POP: Eyelids, Tommy Keene, and Zebra Hunt
Portland's Eyelids and Seattle's Zebra Hunt sound a bit like distant relations, paying homage to different facets of the indie-guitar-pop gem, with Tommy Keene—the consummate well-kept secret with three decades of sweet, sad, unsung masterpieces in his discography—at the head of the table. SEAN NELSON

GOTHTRONICA: Ultra Violent Rays
Black shades, low-light music videos, Bukowski quotes on their Twitter page—what Los Angeles duo Ultra Violent Rays lack in musical output, they make up for in image. The three songs they have officially released are a perfect distillation of their projected style; bassist/loop operator/vocalist Cooper Gillespie and drummer/sequencer Greg Gordon have taken a sharp, pop-scented pen to their gothtronica sketches, and come out with something tight yet stylish, and are reportedly sitting on a new EP’s-worth of material. TODD HAMM