Sunday Preview

Mother Falcon

12:15pm, Orange stage

An orchestral group of various sizes and shifting personnel, Mother Falcon delivers on every level. Fronted by Nick Gregg, the locals' symphonic pop is at once ethereal and organic on this year's five-song debut EP, Still Life, a feathery swoop of strings, horns, and vocals taking flight majestically on stage. – Margaret Moser

Beat Box

12:25-8:45pm, Blue stage

Crew 54 (12:25pm): Catalysts of the local hip-hop scene and the hardest working crew in the ATX, the Killeen duo of G-Christ and M.O.S. will be backed by a live band as they rock raps from recent EPs The 54 Reality Show Tape and Slap Rapz.

Pharoahe Monch (4:50pm): Rewind the tape to 1999 when Rawkus Records ruled the underground. Soundbombing II – one of the all-time greatest hip-hop comps – featured heat from up-and-coming MCs Eminem, Mos Def, and Talib Kweli. Despite never becoming a household name, Pharoahe Monch stood out then and now for deft wordplay and an incredible stick-and-move flow. The Organized Konfusion vet waited eight years to follow up his debut with 2007's Desire, but it didn't disappoint.

P.O.S. (5:40pm): Perhaps no artist captures the spirit of this festival quite like P.O.S. When not thrashing hardcore project Building Better Bombs, the Minneapolis Rhymesayer bridges the gap between punk rock and emo-hop, spitting heart-on-sleeve raps and leaving it all on the stage.

A-Trak (8:45pm): A world DJ champion at age 15, Montreal-born A-Trak is one of the most technically skilled turntablists in the world. Having backed Kanye West on tour since 2004, the aim of the Kid Sister producer is now more booty jiggling than beat juggling. – Thomas Fawcett

Metallurgy

12:30-4:30pm, Black stage

Austin prog quartet Eagle Claw (12:30pm) leaps forward in the local beatdown scene with its Poacher download, leaders "Helm" and "Elephant" swaggering like early Mastodon without the metallic trappings. Boston quartet Junius (1:05pm) adheres to the writings of Russian-born alternative (space) historian Immanuel Velikovsky on debut studio LP The Martyrdom of a Catastrophist. Twenty-year-old Cleveland thrashcore quintet Ringworm (3:40pm) continues under the punk-studded vocal immolation of Human Furnace and the dual axe attack from Matt Sorg and John Comprix. Finally, there's Floor (4:30pm). Hot off Songs for Singles, Miami metal trio Torche's recent EP, frontman Steve Brooks revives his 1990s Florida doomsayers, who reunite to mark September's 12-LP/8-CD Below & Beyond box set. – Raoul Hernandez

Indian Jewelry

1pm, Blue stage

Indian Jewelry's arc is evolutionary: knuckle-dragging thump, dark waves of drone, fully erect industrial dance. Third LP Totaled (We Are Free) is the Houston-bred quintet's most focused, reveling in futuristic New Wave, with trademark paranoia intact. Strobe 'em if ya got 'em. – Audra Schroeder

Black Nasty

2pm, Blue stage

The bizarre alter-ego of Ted Beck, Black Nasty music has some psycho-sexual escapades that would fit right in at Insane Clown Posse's Gathering of the Juggalos were it not cut with such a wicked, at times revolting, sense of humor. Having penned rap classics "AIDS Can't Stop Me" and "Howz My Shit Taste," Beck has pondered retirement and recently starred in his first film, the straight-to-DVD drama All American Orgy. – Austin Powell

Deakin

2:10pm, Orange stage

Since the four members of Animal Collective scattered to respective solo projects, guitarist Josh Dibb has been the least visible. That doesn't mean he's sitting around designing shoes or something. Well, he has, but there's also an anticipated solo LP on Paw Tracks. – Audra Schroeder

OFF!

2:15pm, Black stage

Once and future Circle Jerker and former Black Flagman Keith Morris' punk rock supergroup returns to FFFF, dreadlocks intact. Redd Kross' Steven McDonald and Rocket From the Crypt's Mario Rubalcaba percussively concuss, while Burning Brides' Dimitri Coats extracts frenetic squalls of Los Angelean punk-as-fuck awesomeness from his guitar. – Marc Savlov

Toro y Moi

2:55pm, Orange stage

A breakout of South by Southwest 2010, Toro y Moi makes glitch-pop music on a budget, with distant nods to J Dilla and Animal Collective. To file his excellent Carpark debut, Causers of This, under the microphenomenon of "chillwave" would be to miss the wonders Chaz Bundick works with a laptop, scattering beats and bleeps beneath his retro-soul vocals. – Austin Powell

Mariachi el Bronx/The Bronx

2:55pm, Yellow stage/5:20pm, Black stage

Mariachi is the muy fabuloso alter-ego of L.A. aural paint-strippers the Bronx. The former plays traditional mariachi, complete with traditional garb, while the latter actually out-Black Flags Black Flag in terms of sheer hardcore power. Earplug alert: Singer Matt Caughthran has a roar more tinnitus-inducing than a Lockheed F-22 Raptor crashing into a sheet metal factory in hell. – Marc Savlov

Jean Grae

4pm, Blue stage

NYC rapper Grae has yet to reconnect with the white-hot focus of 2002's Attack of the Attacking Things or the introspective slam of 2004 standout This Week, but that doesn't mean she has nothing left to say. Latest LP Cake or Death proves she's still got ruff rhymes for days, and live, you'll be doing the "Stick Up Dance." – Audra Schroeder

Yelle

7:40pm, Blue Stage

La Nouvelle Vague came a half-century too early for Bretagne beauty Julie Budet, whose coming out with DJ GrandMarnier for a Mohawk courtyard of local Francophiles in October 2008 still pogos an electro memory as buoyant as the Frenchies' 2007 EMI debut, Pop-Up, followed up last month with EP La Musique. – Raoul Hernandez