DOCTOR NIGHTLIFE still believes in God. Consequently, she will be headed out to Cap Centre this weekend to see Clapton. After all, everybody needs to make at least one leap of faith a year just to keep the soul supple. Elsewhere: FRIDAY


Still can't do a thing with that western swing? Just a little offbeat on that syncopation suite? Cotton on, Joe, at the Masters Tour Country Dance Workshop, Friday through Sunday at the Chevy Chase Holiday Inn. Workshops cover two-steps, East and West Coast swing, schottische, cha-cha and more; instructors include champions from all over the country. Tickets for all workshops and dances are $50; individual events range from $6 to $20; call 949-3061 for information. SATURDAY


Two respected jazz ensembles from the Soviet avant-garde movement, the Leningrad Duo and Moscow's Tri-O, appear in a rare double bill at the D.C. Arts Center in Adams-Morgan. The Leningrad Duo combines trumpet/fluegelhorn and double bass, ranging the free jazz universe, mixing ragas and bop and trads without being either atonal nor theatrical. Among them, the three members of Tri-O (spoken as Trio, Three Zeros, OOO, or Three Holes) play bassoon, clarinets, tuba, trumpets, sousaphone, saxes, flute and ethnic woodwinds; a "postmodern" group, they came out of the radical arts scene, and have past ties to rock and Dixieland bands and even the punk-noise Zvuki Mu. Tickets $7; call 986-5932 or 745-5898. SUNDAY


The 12th annual Dupont Circle Dancin' in the Streets bash is the current affair, a nod to the neighborhood from the Afterwords Cafe. From 2 till 8, rain or shine, stomp it up with the rock, rock, rockabilly Goin' Goin' Gone and Bill Kirchen & Too Much Fun, along 19th Street between Q and the circle.


When they talk about their influences, Nashville's Pirates of the Mississippi talk Clapton (!) and Waylon and Jimi; but basically these are Hank Williams Jr.'s not-too-rowdy friends. This is pretty easy two-step country-rock -- based on the old-style country, not the neo-Byrdsian type -- not so twangy as the Kentucky Headhunters, but more tongue-in-cheek. "Honky Tonk Blues" is the single, and the hook; the best track is "Feed Jake," possibly the first worthwhile song about a dog in country music (at Zed; 768-5558).


The D.C. Blues Society jam moves into spiffy quarters at Takoma Station Tavern. From 4 to 8, all singers, pickers and clappers are welcome (369-6781). MONDAY


If you think of the Radiators as the fishhead band -- half-gumbo, half-rock 'n' roll -- the Subdudes would be the band the Rads are between the Neville Brothers and. Which is to say, they have a squeezebox, but for once he's not the singer; and they have a percussionist, but not a drum set, exactly. You'll see: The good-timing, good-tempered Subdudes return to the Birchmere ($8.50, 549-5919 or 432-0200) with Rhode Island School of Shawn Colvin design songwriter Barb Schlaff. TUESDAY


Now here's good rockin' tonight -- a rare pairing of Mike Cotter and guitar hacker Bill Kirchen at Durty Nelly's. Cotter has a voice like a wake-up call from an eiderdown quilt (the cuddly kind that quills you in the rear every once in a while) and Kirchen jumps in with both feet. Talk about Too Much Fun; that Kirchen is everywhere. He's the new Pete Kennedy -- and the old one isn't tired yet. Doug, get those Pimm's Cups and cukes ready (652-1444).


If you think Anton's 1201 only offers up guys in polyester blazers and off-off-Broadway cabaret, think again: It's about to get some serious soul. Second-generation Memphis soulster Carla Thomas swings in for four nights ($19.50; 783-1201). She may be best known for her duet years with Otis Redding and funky papa Rufus, but she Stax up just fine by herself, thank you -- not too many 15-year-olds start out with a million-seller ("Gee Whiz"). WEDNESDAY


While the Brit neo-groovesters Soul II Soul sweep into DAR Constitution Hall ($22.50; 432-0200), and the down-and-dirty Albert King sweats down the Birchmere ($17.50; 549-5919), the down-and-Diddley Jesse James & the Raiders do the old R&B in a Bo-knows-gunslingers hat. James, who in fact was Bo's bassman for several years back in the '60s, also worked as a session man for Chicago's great Chess blues label; he and the Raiders are at J.T. Seville's in Camp Springs ($2; 449-7500). THURSDAY


Baltimore's 8 X 10 has a cool idea for hot August nights -- triple-bill classic flix at 8, no cover, free popcorn, beer for a buck. Make that cool and cheap. This time it's Mel Brooks night ("Blazing Saddles," "History of the World, Part I" and "High Anxiety"). Next Thursday is three Kings ("Blue Hawaii," "Clambake" and "Jailhouse Rock"), followed by three musicals and then neo-westerns. For more information call 301/625-2000.