 Aurora lucis rutilat

Aurora lucis rutilat (Latin for "Dawn reddens with light") is the incipit of an Easter hymn 
of the Latin rite, first recorded in the Frankish Hymnal tradition (8th/9th century, one of the Murbach hymns) and preserved in the Benedictine "New Hymnal" (9th/10th century).In the numbering introduced by Gneuss (1968), it is no.