Coming Soon . . . : Music: Valley coffeehouses such as the cutting-edge Iguana Cafe serve up some stimulating live blues and folk tunes along with the caffeine.

The Iguana Cafe will celebrate its second anniversary in October, and those two years of existence qualify the North Hollywood spot as a granddaddy of this city’s coffeehouse revival.

When the Iguana opened, offering nightly selections of poetry and acoustic music, there wasn’t much competition on this side of the hill. Now places like the Cobalt Cafe in Woodland Hills, Common Grounds in Northridge and Coffee Junction in Tarzana have sprung up, and the San Fernando Valley has a thriving circuit for blues and folk singers.

“If you want a big production, go to Vegas,” said Tom Ianniello, owner of the Iguana. “My place is a working-class place. Slide guitar and blues, rockabilly--that’s basic stuff, and that’s what folks want to hear.”

Though such Los Angeles locales as Highland Grounds and Mama Pajama may be better known, the Valley coffeehouses serve up music that is every bit as stimulating as a double espresso.

“Coffee Junction is like a little cabaret with positive music,” said its co-owner, Sharon Benson. Six months ago, her 1-year-old establishment began presenting live entertainment once a week, then quickly expanded it to Friday through Sunday to meet the public demand.

The return of roots music has reverberated beyond coffeehouses. The Blue Saloon, a North Hollywood bar, attracts healthy audiences to its Wednesday through Saturday rockabilly shows. Country has become a bigger and bigger draw at the Palomino during the last year.

“They say that country is coming back,” said owner Bill Thomas. “We’re getting larger crowds for it.”

The Iguana will celebrate amid all this by throwing a six-hour anniversary party Oct. 14. Veteran cafe poets such as Ellyn Maybe and Mike Mollet will read. The musical lineup includes Dan Bern, Liz Byrnes and Tom Winslow, who are regulars on the Valley circuit.

For the rest of fall, the cafe will continue to offer “Open Poets Circle” at 3 p.m. Sundays, and other nights musical and poetry performances at varying hours, except Mondays, when the place is closed except for occasional special events. Cover charges vary. Call (818) 763-7735.

Here’s a glance at what some other Valley venues have planned for fall.

* FM Station: Rock ‘n’ roll still reigns at this North Hollywood institution. Electric guitars wail and drums pound, with performances by bands with names such as Psycho City and Mental Center. The power chords reverberate seven nights a week with a number of regular features.

Tuesdays are “F Night,” with free admission and giveaways.

On Wednesday nights, Jani Lane of Warrant plays host to the Policeman’s Ball, which in the past has featured surprise performances by big names like Poison and Eddie Money. Each week’s lineup is a semi-secret, though, so fans take their chances when they pay admission.

Sunday night brings “Sunday School,” where a $2 ticket buys 10 bands’ worth of entertainment. And, on Mondays, FM Station is joining the roots movement with “Biker’s Buffet,” a blues night with food and one drink included for $4.

But don’t get the wrong impression just because strains a la John Lee Hooker and B. B. King may drift from the place on those nights. “We’re a rock club,” stated Emily, the booking secretary.

Admission varies, depending on the band. Call (818) 729-2220.

* Cal State Northridge: CSUN’s music department will again offer a semester’s worth of classical and jazz performances. Highlighting this fall’s schedule are three performances that are part of a countywide Mexican Festival of the Arts.

Oct. 31, the vocal group “Octeto Vocal Juan D. Tercero” will perform choral music by 16th- and 20th-Century composers including Juan de Lienas and Jose Pablo Moncayo. Violinist Manuel Enriquez and pianist Federico Ibarra will perform their own works Nov. 19. “Trio Neos,” who play clarinet, bassoon and piano, will appear Dec. 6. The program includes pieces from a variety of Mexican composers.

An exhibit of Mexican folk art is running concurrently in the university gallery.

All three concerts will begin at 8 p.m. in the Recital Hall. Admission is $6 general, $4.50 for CSUN faculty and staff, $3 for students and seniors. For information about all music department concerts, call the university’s 24-hour program line at (818) 885-3500.

* Monteleone’s West: Owner Tom Monteleone insists that his Tarzana nightspot is the Valley’s only true supper club.

“You dine and watch the show like a New York supper club,” he said. “We’re not into groups that just get up and jam. We want a show.”

Among the featured acts this fall are: Jay Orlando, a saxophonist, on Friday and Saturday; legendary pop-jazz vocalist Buddy Greco, who has recently returned to his pop standards roots, Oct. 4 and 5; and the husband-and-wife team of Mia and Tommy Vig Oct. 23. He plays vibraphone and she’s a percussionist.

“They have a very unique act,” Monteleone said.

Sets begin at 7 p.m. Sundays through Thursdays and 9 p.m. Fridays and Saturdays. On weekends, there is a two-drink minimum. Call (818) 996-0662.