To do list

A song for our city Eytan Nicholson and Vincent Sneed were on a mission to write a song with which everyone in Boston could identify. You’ll hear it several times when they perform it with their band, Sweet Tooth & the Sugarbabies, at tomorrow’s ‘‘The Boston Song’’ Music Festival. Sept. 22 from 5-10 p.m. (rain date Oct. 2 from 1-7 p.m.). Free. Faneuil Hall Marketplace, Boston. 617-523-1300. www.faneuilhallmarketplace.com

TODAY

A Tubb full If you’re related to this E.T., there’s music in your genes. Ernest Tubb had a half-century career as a honky-tonk singer, and his great nephew, Lucky Tubb, carries on in the family biz with Lucky Tubb & the Modern Day Troubadours. 8 p.m. $10. Johnny D’s, 17 Holland St., Davis Square, Somerville. 617-776-2004. www.johnnyds.com

A 40th reunion This reunion doesn’t involve silly name tags or bored spouses. “More Back Forty’’ is an exhibit of works in clay, wood, and metal, plus paintings and photos by artists who have exhibited their work at the Art Complex Museum over the past 40 years. Wed-Sun from 1-4 p.m. through Jan. 15. Free. The Art Complex Museum, 189 Alden St., Duxbury. 781-934-6634. www.artcomplex.org

Student union Berklee College of Music students don’t have to wait until graduation to get gigs, thanks to Cafe 939. The student-run music venue and coffeehouse welcomes all styles of music ranging from jazz to bluegrass and welcomes outsiders who like to perform in this intimate space. Tonight’s menu features New York singer-songwriters Ian Axel, Bess Rogers, and Allie Moss. 8 p.m. $12. Cafe 939, 939 Boylston St., Boston. www.cafe939.com

TOMORROW

He delivers This ruthless politician and villain (an oxymoron?) has been a singer and songwriter for more than four decades. Ronny Cox made his film debut as the guitarist in the “dueling banjos’’ scene in “Deliverance,’’ was a mean guy in “Total Recall’’ and “RoboCop,’’ and a ruthless pol in the TV series “Stargate.’’ Sept. 22 at 7:30 p.m. $20. All ages. Arts at the Armory, 191 Highland Ave., Somerville. 800-838-3006. www.brownpapertickets.com/event/192104

Super troupers After a concert in 1998, Katja Nord & Camilla Hedrén were in a taxi on their way back to their hotel when the driver turned around and said: “You look exactly like ABBA!’’ Without turning around, check them out at ABBA the Concert. Sept. 22 at 8 p.m. $30-$44. The Wilbur Theatre, 246 Tremont St., Boston. 800-745-3000. www.thewilbur.com

First things first Our neighbor to the south is busy through Nov. 13 with its annual FirstWorks Festival, a performance feast of concerts, screenings, movement, installations, and more. Pixilerations [v.8] gets the party started tomorrow with multimedia installations, performances, and film/video screenings. Sept. 22 noon-8 p.m. (Pixilerations [v.8] at Sol Koffler Gallery & Granoff Center for the Creative Arts through Oct. 2 ; check website for festival events, venues, and prices through Nov. 13.) Providence. 401-421-4278. www.first-works.org