It’s a boom-box parade, and here’s how it works: You dress for the weather, then show up at Chapel Performance Space with your own playback device (CD/cassette boom box, iPod, or phone with battery-powered speakers), you download the music for free, and then you all set out together to make the night unsilent in the streets of Wallingford. Composer Phil Kline created this in New York in 1992, and it’s performed around the world every December. It’s perfect for closet sentimentalists hankering for something like holiday caroling, but with an avant-garde streak. (Chapel Performance Space, 4649 Sunnyside Ave N,, meet at 6:30 pm/procession at 7 pm, free)