Saturday Happenings

Soggy Strolls

-- The Jamaica Plain Open Studios will proceed as planned this weekend, regardless of the weather. JP is home to more than 100 artists, most of whom will have wares for sale. The classy person decorates with local art; take the Ikea panorama off your wall and replace it with something your neighbor made. Various locations, Jamaica Plain, 11 a.m. to 6 p.m. (through Sunday). More information.

Trane

-- Roxbury homeboy and noted rapper Guru brings his Jazzmatazz hip-hop and jazz fusion act to Boston for the 31st annual John Coltrane Memorial Concert. Blackman Theatre, 360 Huntington Ave., 8 p.m. $10/$25.

Big Bird Rappin'

-- We're not sure how much rap will be involved in "Rappin' with the Raptors," today's public outreach event at the George Robert White Environmental Conservation Center, but we've never included a Mattapan event in the Happenings post before and thought that this one might be a fitting pioneer. (You're next, West Roxbury.) Check out the capacious digs at Boston's forgotten nature sanctuary, learn a little bit about bird watching, listen to the Branches Steel Orchestra, and explore Boston's "greenest municipal building." Mass Audobon Boston Nature Center, 500 Walk Hill St., Mattapan, 1 p.m. Free. More information.

Dancing Hipsters

-- DJ Sega is the latest to come up in what should be called the Philly sound, that simmering gumbo of beats from the world's many ghettos made famous by Diplo's Hollertronix dance party and his Mad Decent record label. Sega had his Boston premiere in front of a packed house last February in support of Diplo, and he promises to rock Allston again tonight. With locals Morgan Louis and DJ Die Young. Great Scott, 1222 Comm. Ave., Allston, 10 p.m. $5/$7.

Acting Up

-- Experimental filmmaker Warren Sonbert, a protégé of Gregory Markopoulos, made movies that skirted the line between realism and abstraction, representations of real time and its manipulation through montage. The program "Queer Sonbert" presents his shorts on gay themes, including his first film, Amphetamine (1966), about the relationship between sex and drugs, and his later works Nobelesse Oblige (1981), which documents the White Night Riots that swept San Francisco after the manslaughter conviction of Harvey Milk's assassin Dan White, and Short Fuse (1992), a film about the ACT-UP AIDS activists. Harvard Film Archive, Carpenter Center, 24 Quincy St., Cambridge, 7 p.m. $8/$6.

Image of DJ Sega from his Myspace page.