The Comedy Studio Presents from 8 to 10 p.m. Friday at Hub Comics, 19 Bow St., Union Square, Somerville. Tickets are $5 (or $6.15 with the online service fee), benefiting the Community Action Agency of Somerville.

Before getting its permanent home at Bow Market, the Comedy Studio (late of Harvard Square) is introducing itself to Somerville with a series of guest gigs. This time host Rick Jenkins is mixing comix with comics such as Valeria Dikovitskaya; Etrane Martinez; David McLaughlin; John Paul Rivera; Anthony Scibelli; and Elisha Siegel. Information is here.

MTA Playwrights Lab from 8 to 10:30 p.m. Friday and from 2 to 4 p.m. and 8 to 10:30 p.m. Saturday at MIT Theater Arts, 345 Vassar St., in the MIT/Area II neighborhood. Free.

The MTA Playwrights Lab is a first-of-its-kind collaboration between Massachusetts Institute of Technology students and professional theater artists – a weekend-long festival of staged readings featuring premiering works by eight new voices in a playwrights workshop. Information is here.

Radius Ensemble Family Concert from 10:30 to 11:15 a.m. Saturday at the Cambridge Main Library, 449 Broadway, Mid-Cambridge. Free.

Nearly every continent is represented in this playful string ensemble concert with singable and danceable tunes from Mozart and Joplin to Korean and South African folk songs – plus a treat from Disney’s “Moana.” Information is here. (Need an evening outing? There’s a Puppet Film Night from 7 to 9:30 p.m. Friday at Somerville Media Center, 90 Union Square, with an updated “Old Mother Hubbard,” “Handmade Puppet Dreams for Families, Volume 1,” the 21-minute “Treeples,” the chocolate drama “Cupcake” and more, starting with a reception at 6:30 p.m. Free.)

Giving@First 24-Hour Play Festival from 8 to 9:30 p.m. at Unity Somerville, 6 William St., just off College Avenue near Davis Square, Somerville. Tickets are $20, which goes to the Boston Area Rape Crisis Center.

More experimental theater with this one-night-only festival of short plays that go from page to stage within 24 hours. A crew of more than 25 writers, directors and actors scramble overnight and all day long to create a full festival from scratch, making for a theater experience that is fun, frantic and likely unforgettable (and benefits a good cause). Information is here.

Ladies Rock Camp Boston April Showcase from  8 to 11 p.m. Sunday at Once Lounge + Ballroom, 156 Highland Ave., Somerville. Tickets are $15 in advance, or $17 at the door, with all proceeds going to support Girls Rock Campaign Boston programming.

Nine brand-new bands take the stage to wrap up an intensive three-day program (the bands are formed Friday) in which the participants learn an instrument and create music together. Information is here.