Listen to Requiem: IV. Sanctus online. Requiem: IV. Sanctus is an English language song and is sung by King's College Choir and Cambridge/Sinfonia of London/Stephen Cleobury. Requiem: IV. Sanctus, from the album John Rutter: The Platinum Collection, was released in the year 2007. The duration of the song is 2:06. Download English songs online from JioSaavn.