Listen to Mass No. 6 in E-Flat Major, D. 950: Credo: Et incarnatus est online. Mass No. 6 in E-Flat Major, D. 950: Credo: Et incarnatus est is an English language song and is sung by Susan Gritton. Mass No. 6 in E-Flat Major, D. 950: Credo: Et incarnatus est, from the album Within a Dream - A Celebration of the Artistry of Richard Hickox, was released in the year 2009. The duration of the song is 6:39. Download English songs online from JioSaavn.