Listen to Office of Readings: I. Invitatory and Invitatory Psalm online. Office of Readings: I. Invitatory and Invitatory Psalm is an English language song and is sung by The Benedictine Monks of Worth Abbey and Alistair Warwick. Office of Readings: I. Invitatory and Invitatory Psalm, from the album Chants for St. Benedict: Sung in English by the Benedictine Monks of Worth Abbey, Sussex, was released in the year 1995. The duration of the song is 2:35. Download English songs online from JioSaavn.