British Library, Gorleston Psalter The Gorleston Psalter (British Library Manuscript Additional is a manuscript notable for containing early music instruction and for its humorous marginalia. It is named for the town of Gorleston in Norfolk.
The Chansonnier Cordiforme or Chansonnier de Jean de Montchenu is a cordiform (heart-shaped) music manuscript. Collection Henri de Rothschild MS held in the Bibliothèque Nationale. Manuscript on parchment.