Gregorio Allegri's Miserere Performed by the Tallis Scholars

Gregorio Allegri's Miserere was "composed during the reign of Pope Urban VIII, probably during the 1630s, for use in the Sistine Chapel during matins, as part of the exclusive Tenebrae service on Wednesday and Friday of Holy Week" and was found to be so beautiful that, "at some point, it became forbidden to transcribe the music and it was only allowed to be performed at those particular services, adding to the mystery surrounding it." A documentary on the piece — Sacred Music: The Storyof Allegri's Miserere / The Sixteen.