This motet was published by Petrucci in 1502. It is intended to be sung by four-voice mixed choirs. It was probably composed by Josquin Desprez when he worked for Cardinal Ascanio Sforza. The characteristics of this motet are that it was written with sobriety, praising Virgin Mary’s quality. It is similar to “Ave Verum” by Mozart. This is one of the only works composed by Josquin Desprez of being performed with modern choirs (SATB). This is a very famous sheet music and it was copied many times. It was also arranged by several composers like Ludwig Senfl who added two more voices. However, Josquin Desprez’s work is unique and was never surpassed, because he wrote with a perfect balance between the text and its melody.