Aer O’Naut presents: For the Love of Ireland from 7:30 p.m. to 11 p.m. Friday and from 1 to 6 p.m. Saturday at Aeronaut Brewing, 14 Tyler St., near Union Square, Somerville. Free.
No green beer here, just a two-day celebration during St. Patrick’s Day weekend that really honors Irish-American culture by fundraising for the Irish International Immigrant Center, which is working with hundreds of people affected by recent anti-immigrant orders out of the White House. The raffle is fit in with a ton of free entertainment: music from the band Sláinte, Irish dancers, a set of Irish songs by resident ethnomusicologist Jason McCool and guests, staged readings of Martin McDonagh’s dark, hilarious “The Lonesome West” and the third annual Boston Irish Poem Day, which gives audience members a chance to recite works by some historic greats, as well as contemporary writers. There will also be a sneak preview of trailers from the Irish Film Festival (coming to the Somerville Theatre on March 23-26) and the release of Aeronaut Brewery’s first Irish stout, “1916” (christened with a dramatic reading of the famous Proclamation of the Irish Republic). Information is here.
“On Record: Music by Bach and Brahms” from 3 to 4:30 p.m. Saturday at the Cambridge Main Library, 449 Broadway, Mid-Cambridge. Free.
The Cambridge Symphony Orchestra Chamber Players celebrates the music of the spheres with selections from the first movement of Bach’s “Brandenburg Concerto No. 2” – music added to NASA’s “Golden Record” in 1977 to be sent into space aboard the Voyager spacecraft and represent, as President Jimmy Carter said. “our hope and our determination and our good will in a vast and awesome universe.” Pieces from the concerto will be played by flutist Elizabeth Petri Henske; oboist Carolyn Damon Hayes; trumpeter Brian Bunnell; violinists Josh Garstka and Cynthia Gerlein; violist Ryan Roelke; and cellists Nathaniel Fruchter and Rebecca Benson. Brahms’ “Sextet, Opus 36” will be performed by violinists Steven Lehr and Regina Cheung; violists Rachel Beesen and Tze-Ping Low; and cellists Joydita Sarkar and April Greene-Colozzi. Information is here.
Classical and street dance combine in an athletic, visually astonishing exploration of shape-shifting and physical transformation by choreographer Ronnie Terrell Thomas in this premiere work of the Mystique Illusions Dance Theatre, launched in March 2015. Information is here.
Spring Equinox Pagan Witch Ritual & Variety Show from 7 p.m. to midnight Saturday at Out of the Blue Art Gallery Too, 541 Massachusetts Ave., Central Square. There is a $10 donation requested at the door.
A dozen bands is just the start of this trippy ceremonial recognition of the equinox, when day and night are of equal length and the Western hemisphere can start getting serious about spring. There’s a ritualistic pagan witch blessing by Linda Viens and Kristina Kehrer; belly dancing by Adriana Armano and Nisha Rajagopal (above); and poetry by Jason Wright mixed in with a crazy quilt of music styles: Parma Chai’s violin-fronted Indian funk; Dan Barracuda’s songwriting; The Four Elements’ virtuosic world fusion; Jillian Gilpatric’s Hendrixian guitar shredding; Landlocked James and the One Man Band’s pop-punk; Montserrat’s alternative rock; Slack Tide’s reggae rock; Fordham Road’s progressive rock; and Ray Ray Hogg and The Mother Flower’s traditional country music. Information is here.
Activist Art Pop-Up Market from 1 to 5 p.m. Sunday at Aeronaut Brewing, 14 Tyler St., near Union Square, Somerville. This 21-plus event is free; shoppers are encouraged to bring cash in small bills.
Each of the participating artists are donating a percentage of their sales to organizations such as the ACLU; Black and Pink; Flint Water Crisis; Planned Parenthood; Standing Rock; and The Young Center for Immigrant Children’s Rights. In addition to being able to shop for everything from pussy hats to ceramic beer steins, people can stop by a political postcard station and create a card to send off to a politician; and enjoy the music of Seth Mulliken, Babam and Lewis Morris. Participating artists include Abigail Neale; Abigail Wolf; Amira Pualwan; Bebbabeads; Bryan Mastergeorge; Christie G. of the Willow Pier Studio; Consent Nation; Emily Nadel; Ian Petrie; Jeff Bartell; Jesse Saler; Julie Morgenlender; Kwohtations; MassArt ceramic students; Maggi FitzPatrick; Megan Smith (her work is above); ReccaShay; Vanessa Templeman; the Why the Long Face? game; and incarcerated artists. Information is here.