http://www.youtube.com/watch?v=nZlqkrg8lQQ

Enjoy some music to benefit music therapy. The Tiny Festival of Huge Proportions brings a family cupcake garden party with music to Inman Square’s Lilypad, with all money raised going to benefit the HOPES music therapy program at Massachusetts General Hospital. The bands at the all-ages show (children under the age of 15 get in free) are The Michael J. Epstein Memorial Library, The Impulse Powers, Joe Krafty and Space Balloons, and light refreshments such as soft drinks, tea and nibbles sweet and savory will be provided. The suggested donation is $10 and up, and advance tickets are available here.  The Tiny Festival is 2 to 6 p.m. Saturday at Lilypad, 353 Cambridge St., Inman Square.

Catch “Absurd Person Singular” before curtains close forever. The extended run of Alan Ayckbourn’s brutal Christmas comedy “Absurd Person Singular” gets its final three shows this weekend in Central Square. In the play, three couples navigate the social ladder over the course of three ridiculously catastrophic Christmas parties, trying desperately to deal with their own relationships, as well as their “friends,” in very different ways. Tickets range from $15 to $56, and shows are 3 and 8 p.m. Saturday and 2 p.m. Sunday at Central Square Theater, 450 Massachusetts Ave., Central Square.

See city councillor DJ Leland Cheung spin to defend Cambridge cred and help homeless kids. This cross-river Boston Hometown DJ Throwdown benefit for homeless kids via the nonprofits Youth on Fire in Cambridge and Boston’s Alliance of GLBT Youth features what’s sure to be some blistering DJ battles, including SoulKore/Zulu Nation vs. DJ Bruno; Frank White (of the Good Life in Boston) vs. LeahV (of Zeusday at Central Square’s ZuZu); Ill Neil vs. Moe Dee; and Val Beatz vs. DJ On&On. But probably the most intriguing match-up is city councillor vs. city councilor, with Cambridge’s Leland Cheung taking on Boston’s Tito Jackson. Sure, they can legislate. But can they spin?

The show starts at 7 p.m. with VIP music and early dancing with DJ Claude Money, with the DJ match-ups starting at 8 p.m. The main event of Cheung vs. Jackson is to start at 9:40 p.m., with the pro DJs returning at 10:30 p.m. DJ On&On mixes at 11:45 p.m. as votes are cast, and the winner will be announced at midnight.

Tickets are $20 in advance and $25 on the day of the event, which takes place at 8 p.m. Saturday at The Sinclair, 52 Church St., Harvard Square.

Shop the Rock and Roll Yard Sale. Chris and Jennifer Daltry of What Cheer? in Providence, R.I., have been putting on their Rock And Roll Yard Sales for almost a decade in their home state and as part of the Somerville Arts Council’s ArtsUnion program. These events feature local independent sellers offering up a quirky and unique mix of primarily vinyl records and music-related stuff as well as vintage goods and DIY handmade items. Some of New England’s best record sellers will be on hand with piles and crates of vinyl to dig through, including LPs, 45s, 78s and CDs, cassettes, old eight-track, music and audio gear and other music memorabilia, making for a perfect way to find one-of-a-kind items and support DIY and independent, small businesses. The event takes place from 11a.m. to 5 p.m. Sunday at 90 Union Square, Somerville.

Hum along to history with Mary Lou Lord and Cindy Lee Berryhill. Mary Lou Lord is a graduate of both Berklee and busking the streets and subway stops of Cambridge, and as a founding artist of the Kill Rock Stars label was key in discovering and evangelizing for artists such as Daniel Johnston, Big Star and Nirvana. She’s back in Harvard Square, this time to perform at Passim on a shared bill with Cindy Lee Berryhill. The singer and songwriter promises some brand-new songs along with the tales of aliens, lost love, brain-injured soldiers and love renewed fans loved from her six albums of voice, cello, guitar and glockenspiel with cellist Renata Bratt and percussionist Randy Hoffman. The show is 8 p.m. Sunday at Passim, 47 Palmer St., Harvard Square. Tickets are $15.