Aggregation No. 1Harvard College Film Festival from 1 p.m. Friday through 5 p.m. Sunday in the Fong Auditorium on the fourth floor of Boylston Hall, Harvard Yard, and Menschel Hall of the Harvard Art Museums, 32 Quincy St., near Harvard Square. Free.

This third annual student-run film fest doesn’t just give student filmmakers a chance to be screened and judged by artists and scholars; it brings major films and the industry professionals who made them in for discussion (or, in some cases, has them call in by Skype). Friday brings the student films to the screen – with the winners due for another showing Saturday – as well as “The Adderall Diaries” starring James Franco, Amber Heard and Christian Slater and the family drama “Krisha” (now showing in Kendall Square, but without the call-in by lead actor Krisha Fairchild); Saturday brings an industry panel on new media and sci-fi flick “Rise” with a virtual reality experience; and Sunday includes a conversation with David Simon, creator of “The Wire” and “Treme” and Harvard’s Elizabeth Hinton of the departments of history and of African and African-American Studies. Information is here. (This is also the opening weekend of the 32nd Annual Boston LGBT Film Festival, taking place around Greater Boston, including at The Brattle Theatre, 40 Brattle St., Harvard Square. Information is here.)

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Aggregation No. 2Out of the Blue Fools Fest from 5:15 p.m. Friday to 1 a.m. Sunday at the Out of the Blue Art Gallery Too, 541 Massachusetts Ave., Central Square. Sliding-scale tickets are $13 to $20 Friday and $15 to $20 Saturday, or $25 to $30 for a two-day pass available at the door.

The gallery’s first big festival has an exhaustive lineup of bands from as far away as Colorado and Toronto, surrounded by affordable art and, outside gallery doors, plenty of good, nearby eating options for the inevitable breaks to let the ringing in your ears subside. Friday bands include: The Barbazons (seen above); Ian; Home Body; Sound of Ceres; Pick A Piper, with a member of Caribou; Steep Leans; Vanishing DMC, with members of Curse Purse and Sebadoh; Neolibz; Taboo; The Mardi Kings; What Nerve; Horsehands; Jazz Massagers; Bat House; Só Sol; Dyr Faser; Candy Miami; and The 7th House. Saturday bands include Midriffs; Magic Shoppe; Black Beach; The Channels; Littlefoot; W00dy; Sam Gas Can; Procedure Club; Arkm Foam; Robert Robinson & The Connecticut River Band; Rosie and the Rosies; Frank Hurricane; Secret Lover; earthquake party!; Jarva Land; Birthing Hips; Sun Young; Listening Woman; The Forgotten Jam; Audrey Harrer; Patchouli Mist; Sunshine; John Cushing Trio; Fat Shuggy; and Johnnie & the Foodmasters. Information is here.

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Aggregation No. 3Family dance with potluck from 5:30 to 10:30 p.m. Sunday at the Masonic Lodge, 1950 Massachusetts Ave., Porter Square. Tickets for adults are $5 to $12 on a pay-what-you-can basis, and $3 for kids.

This event from the Boston Intergenerational Dance Advocates starts with an hourlong all-ages dance with live music, followed by an hour of potluck dining and, from 7:30 to close, contra dance. Information is here.

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Aggregation No. 4The 2016 Rock ’n’ Roll Rumble Preliminaries Night 1 from 9 p.m. Sunday to 1 a.m. Monday at Once Lounge + Ballroom, 156 Highland Ave., Somerville. Tickets are $10 online and $15 at the door.

If the dozens of bands at the Fools Fest wasn’t enough rock, or if you’re a traditionalist – this nine-night, 24-band showdown began all the way back in 1979, and past participants include the Amazing Royal Crowns, Del Fuegos, The Dresden Dolls, Gang Green, Morphine, Powerman 5000, The Sheila Divine, The Shods and ’til tuesday – come hear the first four bands face off for the year’s rumble crown. The bands on Sunday include The Digs at 9 p.m.; Gold Blood & Associates at 9:45 p.m.; Weakened Friends at 10:30 p.m.; and Big Time Kill at 11:15 p.m. Information is here.

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Aggregation No. 5Town Hall variety show from 9 to 11 p.m. Sunday at Danger!Awesome Underground, 645 Massachusetts Ave., Central Square. Free.

This unique variety show returns with its second city councillor for an ask-me-anything session amid comedy and music with host Sam Ike and fellow comics Steve Macone (of The New Yorker and “Last Comic Standing”) and Kenice Mobley (of the Boston Comedy Festival). The city councillor: Nadeem Mazen (seen above, shorn of his man bun).