Pop in, fill up.LISTENBen Folds and Nick HornbyWhat: The American singer/songwriter and English novelist (High Fidelity, About a Boy) discuss and perform selections from their recent musical collab, Lonely Avenue. Why: It’s like Behind the Music, only with relevant artists, new material, and fewer drug spirals.When: Tonight, 7:30 p.m.Where: Barnes & Noble, 33 E. 17th St., b/t Broadway & Park Ave. S. (212-253-0810). Admission is free.VISITHouse of Waris Pop-Up What: Drop into Wes Anderson comrade Waris Ahluwalia’s (The Darjeeling Limited) temporary parlor packed with jewelry, Cynthia Rowley tool kits, Eric Anderson artwork, Olympia Le Tan totes, Assouline tomes, and more.Why: Keep things civilized with a cup of Himalayan tea and Daylesford biscuits and chocolate.When: Thru Sun., noon-6 p.m.Where: 504 W. 24th St., b/t Tenth & Eleventh Aves.DRINKBar Basque What: A holographic lady, all-weather wraparound terrace, and self-serve wines by the glass give this celebration of the region of Spain a cyborg twist.Why: Sharable pintxos (Iberian ham, gazpacho jelly), choose-your-own gin-and-tonic program (with notes of melon, rosemary, and coriander), and a guest Basque chef every other month.When: Opens today. Sun.-Thurs., 6-11 p.m.; Fri. & Sat., 6 p.m.-midnight.Where: 839 Sixth Ave., b/t 29th & 30th Sts. (646-600-7150).RESERVEThe Feast: Roaring Twenties Speakeasy & SteakhouseWhat: The Guerilla Culinary Brigade jumps on the zeitgeist with a Prohibition-era pop-up dining experience complete with art deco stylings, a three-piece swing band, and surprise live performances. Why: Throw back Widow’s Kisses (brandy, chartreuse, Benedictine, and bitters), Blind Burros, and Chocolate Ale Flips during a four-course meal prepped by guest chef Seamus Mullen.When: Sign up now. Event, Oct. 21-23, 7-10:30 p.m.Where: Hotel on Rivington, 107 Rivington St., b/t Essex & Ludlow Sts. (212-475-2600). Reservations ($85 plus tax and tip) online at thepopuprestaurant.com.DISCOVERThe Scar Project What: Attend a gallery walk-through with fashion photographer David Jay or reflect on the arresting images of young breast cancer survivors on your own.Why: The large-scale portrait series puts faces (and bodies) to the disease’s staggering statistics.When: Thurs.-Sun.Where: Openhouse Gallery, 201 Mulberry St., b/t Spring & Kenmare Sts. Tickets ($10 and up) online at eventbrite.com.DINE9 OpensWhat: Michael Berardino (Dell’anima, ’Inoteca) tackles global cuisine — including North African-spiced braised lamb neck — at the tune-pumping, graffitied lounge.Why: The unexpected standout? A lighter-than-air huckleberry-flecked citrus yogurt cheesecake.When: Daily, 5-11 p.m.Where: 800 Ninth Ave., at 53rd St. (212-956-3333).Photo: Eamonn McCabe Up to 55% off Soho HeartsAmsterdam native Juliette Booker’s jewelry collection runs the gamut from the elegant (bows and layered chains) to the playful (animal pendants and feathers). Take up to 55% off Soho Hearts today on Swirl.