Listen to Gradual: Haec dies online. Gradual: Haec dies is a Latin language song and is sung by Schola des Pères du Saint-Esprit du Grand Scolasticat de Chevilly and Lucien Deiss C.S.SP.. Gradual: Haec dies, from the album Chants 101, was released in the year 2009. The duration of the song is 2:55. Download Latin songs online from JioSaavn.