B-Br II 267 (cat.nr. 646)
Processionale for cistercian nuns, 15th and 16th century. Square notation on red staves. 17v: Rubric Due sorores. The chants are divided over a first, second and third statio.
The hymn Gloria laus has the rubric Due sorores.
Fol. 14r: On the Palm Sunday procession: In prima statione Collegerunt pontifices, in secunda statione Unus autem ex ipsis, in tertia statione Quid [facimus].