Rauner 003203 Folio 081v Chant 1 Nigra sum sed formosa
"Nigra sum sed formosa," the third antiphon from the office of Lauds, Saturdays Concerning the Blessed Virgin, from the Octave of Easter until Advent
Nigra sum sed formosa filie hierusalem ideo dilexit me rex et introduxit me in cubiculum suum | ~Deus deus