Music on Main presents the fourth and final concert in the season with an A Cappella Extravaganza at 3 p.m. Saturday, May 10, at First Congregational Church. Strike a Chord and Tapestry will present a cappella music from two distinct traditions.

Strike A Chord, a co-ed a cappella group based in Chicopee, will perform a mix of show tunes, doo-wop, pop, funk, and gospel, with some comedy. Their repertoire includes songs from the 40s to present day.

Tapestry, a select vocal ensemble made up of students from Bard College at Simon’s Rock in Great Barrington, will present a program of Renaissance madrigals.

A free will offering will be taken to benefit the music program at the church. Information: (413) 298-5365.