GREENFIELD — On one evening per December for more than three decades, cities around the world have come alive through the cherished holiday tradition that is Phil Kline’s “Unsilent Night.”

Although a bit late to the party, Greenfield surely has a seat at the table, expressed organizer AnnMarie Dobosz.

Greenfield’s first “Unsilent Night” will take place on Sunday at 6 p.m. Dobosz, a participant across multiple cities since the late 1990s, described the event as “a joyful and weird holiday tradition that … takes the form of a street promenade in which the audience becomes the performer.” Each participant brings a bluetooth speaker or boombox, downloads one of four tracks of music, and presses “play” simultaneously.

“The fact that the participants play different parts simultaneously helps create the special sound of the piece,” Dobosz explained in an email. “The crowd then walks a carefully chosen route through the town, creating a unique mobile sound sculpture [that] is different from every listener’s perspective.”

According to the event’s website, “Unsilent Night” started in winter 1992 when American composer Phil Kline conceptualized “public artwork” in the form of a holiday caroling party. He composed a 45-minute multi-track electronic piece, invited a few dozen friends to New York City’s Greenwich Village, gave each person a boombox with one of four tapes in it and instructed everyone to hit “play” at the same time. The crowd walked a predetermined route through the city.

“In effect, we became a city-block-long stereo system,” Kline said, quoted on the website.

The piece became an international phenomenon. Since 1992, it has been presented in 146 cities and five continents, drawing thousands of participants in some cities, according to the website.

Dobosz, who lived in New York City and San Francisco before moving to Greenfield in 2021, said while Greenfield may not be the urban metropolis she’s used to, “there’s some really interesting places” in the city that should still allow for a joyous experience.

“[Unsilent Night] suits itself to big crowds in cities to a small gathering in a little town,” she said.

Greenfield’s route will entail a 40-minute walk beginning at Court Square and heading up and down Main Street before turning down Osgood Street, then to Federal Street, then back to Main Street before finishing back at the Greenfield Common. Dobosz said the group will seek out some alleys and narrow streets “to get a different sonic experience” along the way.

“One of the things I really love about Unsilent Night is even though it’s the same piece of music we’ve used for 30-plus years, it sounds different every time,” Dobosz said, observing that different locations can vary greatly in terms of acoustics.

Dobosz advised those who are interested in participating in the free event to meet at Court Square at 6 p.m. sharp, as those who arrive late may not be able to press “play” at the same time as everyone else. She added that having a bluetooth speaker, portable boombox or other device to amplify music makes for a better experience. Participants must download one of the four tracks before the event begins. They can be downloaded at soundcloud.com/unsilentnight/tracks.

The route has no stairs and is mostly flat, with Americans With Disabilities Act-accessible sidewalks and street crossings, according to Dobosz. Well-behaved leashed dogs, wheelchairs and mobility scooters are welcome, but not bicycles, skateboards or other fast-moving wheeled modes of transportation.

Holiday attire is encouraged, but not required.