Listen to Gregorian Chant: Hymn for the cross "Vexilla regis"  online. Gregorian Chant: Hymn for the cross "Vexilla regis"  is an English language song and is sung by Stephen Cleobury and Westminster Cathedral Choir. Gregorian Chant: Hymn for the cross "Vexilla regis" , from the album Sacred Chants, was released in the year 2017. The duration of the song is 4:11. Download English songs online from JioSaavn.