If you haven't booked up your whole weekend for watching the NFL, there's still plenty of things to do in the city. Maybe it's time to add to your record collection? If so, head to Somerville for the Rock and Roll Yard Sale. There's also theater to see, and an unusual music performance at A.R.T., in case you didn't get a ticket to "Waitress."

THEATER

The Boys in the Band

Friday through Oct. 3

Plaza Theater

539 Tremont St., Boston

$30-$40, 617-933-8600

www.bostontheatrescene.com

Mart Crowley’s depiction of New York gay life in this 1968 play was an eye-opener for straight audiences who knew little about that life beyond gross stereotypes, and for gays, who rarely saw themselves depicted so sympathetically in a mainstream work, it was emboldening — some have even argued that it helped set the cultural stage for the Stonewall Riots.  

RELATED: "Book of Mormon" is a can't-miss show at a last-chance theater

ART

Wild Thing

Thursday through Oct. 17

555 Gallery

555 E. 2nd St., Boston

Free, 857-496-7234

www.555gallery.com

555 Gallery presents the work of three artists. Photographer Neal Rantoul’s “Monsters” plays on familiar pop culture figures from Barbie to Beetlejuice; video artist Tamara Al-Mashouk’s “Angel Eye” stars a Brooklyn fortune teller named Angel who plays the Theremin; painter Mark-Anthony Kenney, a.k.a MA-Zing, contributes a set of whimsical paintings entitled “Night Moves.” 

MUSIC

Ghost Quartet

Through Saturday

Oberon

2 Arrow St., Cambridge

$25-$35, 617-547-8300

www.americanrepertorytheater.org

American Repertory Theater’s synopsis describes this unique musical by Dave Malloy, a whimsical meditation on mourning in which the actors perform a genre-hopping song cycle on their own instruments, as “an interwoven tale spanning seven centuries, with a murderous sister, a treehouse astronomer, a bear, a subway and the ghost of Thelonious Monk.” How many shows can boast all that?

SHOPPING

Rock and Roll Yard Sale

Sunday, 11 a.m. to 5 p.m.

Union Square Plaza

90 Union Sq., Somerville

Free, what.cheer.records@gmail.com

www.rockandrollyardsale.com

Vinyl hounds should hop to Union Square Sunday, where sellers from across New England are offering up loads of records and CDs, as well as vintage clothes and other cool old stuff music geeks love. Face it, you need a copy of “Whipped Cream and Other Delights” for your apartment wall — we’ll eat our hats if there isn’t at least one here. 

FESTIVALS

Emerge Arts Festival

Thursday, 5 p.m. to 10 p.m.

Boston City Hall

1 City Hall Plaza, Boston

Free, 617-635-3911

www.cityofboston.gov/arts/ 

The City of Boston’s very own arts festival is jam-packed with music, theater, dance, poetry, arts installations, crafts vendors and more. It also kicks off a new exhibition of emerging Boston-area artists. Performers include singer-songwriter Anais Mitchell, Boston’s Poet Laureate Danielle Legros Georges and the Society of Urban Poetry, percussionist Maria Finkelmeier and Kadence Arts and actress Tangella Large.