Musical notation from BL Burn 357, ff. 15v-16

Two-part sequence 'Amor patris et filii veri splendor', with narrow, oblong note-forms and vertical lines showing word-divisions in six pairs of four-line staves. Image taken from ff. 15v-16 of Polyphonic sequence 'Amor Patris et Filii', apparently for Whit-Sunday, followed by a 'Benedicamus Domino' and devotion to Julian. Written in Latin.