Listen to Requiem : Tractus "Sicut servus" online. Requiem : Tractus "Sicut servus" is an English language song and is sung by Enrico Bava, Xavier Baizeau, Jean-François Chiama, Anne Guidet, Maurice Bourbon, Sylvère Bourges, Jacques Maes and Ensemble Métamorphoses de Paris. Requiem : Tractus "Sicut servus", from the album Requiem pour un Millénaire, was released in the year 1999. The duration of the song is 1:41. Download English songs online from JioSaavn.