Two parchment bifolia which were originally adjacent, nested, at the centre of a gathering, used to form pastedowns in the binding of a copy of the printed Nuremberg Chronicle: H. Schedel, Liber chronicarum, Nuremberg, 1493. The provenance is unknown, but the music and script are all English. The pages of each bifolium are here foliated 1–4. Leaf A (fols 1 and 4; 1r/4v pasted down, 1v/4r exposed) was the front pastedown, leaf B (fols 2 and 3; 2r/3v pasted down, 2v/3r exposed) was the rear.
Contents: an unknown setting of the Ave regina on the first recto (1) is directly followed by two movements of the Mass Alma redemptoris (Credo, Sanctus, 2-3) ascribed elsewhere to Leonel Power; an Agnus Alma redemptoris that uses the tenor of the setting ascribed elsewhere to Power but with newly-composed upper parts (4); and the Gloria of the Mass Rex seculorum (5) attributed variously to Dunstaple and Power. The Kyrie of that mass, known from elsewhere, was therefore not copied here preceding the Gloria; and the Credo of the Alma redemptoris mass was not immediately preceded by its Kyrie (which we do not have) and Gloria. No composer names are visible here.
