Listen to Requiem, K 626 : Agnus Dei online. Requiem, K 626 : Agnus Dei is an English language song and is sung by Choeur de Paul Kuentz, Adrian Brand, Madeleine Jalbert, Paul Gay, Hélène Obadia and Orchestre. Requiem, K 626 : Agnus Dei, from the album Requiem pour un Millénaire, was released in the year 1999. The duration of the song is 3:46. Download English songs online from JioSaavn.