Colla Voce Seattle is a mixed-voice ensemble with singers drawn from all around the Seattle area. Dedicated to presenting concerts exploring a wide range of choral literature, Colla Voce offers singers the opportunity to learn and perform a variety of serious repertoire including 19th-century spirituals, psalms, and plainchant, as well as works by 20th and 21st century composers. Much of this repertoire is a cappella, drawing from the traditional choral library as well as serious literature from lesser-known choral composers.

Conducted by Mark Adrian, the ensemble numbers between 20-25 singers from all walks of life. Concerts are typically performed at St. Catherine of Siena in the Maple Leaf neighborhood of north Seattle, and at Benaroya Hall in downtown Seattle.