Listen to Introit: Ecce advenit online. Introit: Ecce advenit 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.. Introit: Ecce advenit, from the album Chants 101, was released in the year 2009. The duration of the song is 2:29. Download Latin songs online from JioSaavn.