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FRIDAY:

>> The legendary Buck Hill, the District’s jazz patriarch, performs tonight at Jazz Night in Southwest. 6 to 9 p.m. $5. Check out This Week in Jazz for more of our jazz picks.

>> There are several interesting gallery openings this weekend. Consult the Arts Agenda for all the details.

>> Rising local star Thao is celebrating the release of her debut album on Kill Rock Stars with a big show on the mainstage of the Black Cat. She’ll be there with her band, The Get Down Stay Down, along with openers Sister Suvi and David Schultz & The Skyline. $13, 9 p.m.

>> Don’t forget to consult our film picks of the week, including Filmfest DC, which tonight screens 12 different feature films at three different venues. Our pick for the evening is probably The Investigator, Hungarian filmmaker Attila Gigor’s black comedy about a coroner who agrees to a murder-for-hire scheme to pay for his ailing mother’s cancer treatments. 9 p.m. at the Avalon Theatre.

>> L.A.’s best Cambodian pop/indie rock outfit, Dengue Fever, share a bill with Peruvian-influenced Brooklyn combo Chicha Libre at the State Theatre in Falls Church. 9 p.m., $14/$16.

SATURDAY:

>> The South Asian Performing Arts Network Mela is tonight at the Navy Memorial Burke Theater, located at 701 Pennsylvania Ave. NW, #123. Tickets are $15 in advance/$20 at the door. 5:30 p.m. doors, performance begins at 6 p.m. Read all about what’s in store at this event in our full preview.

>> The Library of Congress hosts the Quatuor Mosaïques, a string quartet made up of musicians from the early music group Concentus Musicus. The program includes two Haydn quartets (op. 20/3 and op. 77/2) and Beethoven’s C minor quartet (op. 18/4). Free, 8 p.m., get in line around 6:30 p.m. to guarantee a seat.

>> British DJ Norman Jay is back in town to bring his “Good Times” set to the Eighteenth Street Lounge for a special show. $TBA, 9:30 p.m.

>> Today is Record Store Day, which is a little bittersweet considering DJ Hut’s recent announcement. “Hometown Heroes” will honor several of the store’s DJs by having them spin electronic music at the Trinidad and Tobago Association (5123 Georgia Avenue NW). $5 before 11 p.m./$10 before 1 a.m./$15 after 1 a.m., 10 p.m.

>> The Black Cat hosts another of its increasingly crucial Second Saturdays series. Ra Ra Rasputin and Buildings will rock the backstage for only $8. 8 p.m.

SUNDAY:

>> The Green Apple Festival is taking over the National Mall, including appearances by actors, performers, activists, and the Flaming Lips. Things get started at noon, still no word on set times.

>> At 2:30 p.m., the Newseum holds its weekly Inside Media lecture. Journalist and documentarian Nick Clooney will be on-hand for a screening of his film A Journey to Darfur and a discussion on his experiences “documenting the plight of hundreds of thousands of refugees who escaped militias ravaging the western region of the Sudan.”

>> Famed organist Olivier Latry, of the Cathedral of Notre-Dame in Paris, will perform twice at the Great Gallery Organ of the Basilica of the National Shrine of the Immaculate Conception (4th St. and Michigan Ave. NE) today: one during the noon Mass and the other at a 6 p.m. concert, both in the Great Upper Church and both free and open to the public. Read more here.

>> Israeli novelist and playwright A.B. Yehoshua will appear at Sixth and I at 7 p.m. For $12, you can hear him read from his newest novel, Friendly Fire, and discuss his career and thoughts on Israel with Leon Wieseltier of The New Republic.