Kyrie from "missa via abbey

Kyrie from "missa via abbey / P.D.Q. Bach ; Richard Proulx. This work is a five-part vocal work for soprano, alto, tenor, baritone, and bass. The original composer is assumed to be P.D.Q. Bach as the composers are listed on the top as "P.D.Q. Proulx."

This is a humorous composition in which Proulx took the tune and harmonization of the Beatle's song, "Yesterday," and set the text of the "Kyrie" to it. Proulx humorously identified the composer as P.D. Q. Proulx.