Intabulation of the five-voice Credo from the Missa de beata Virgine by Josquin. The notation places four voices on a tablature staff, and the fifth voice is given in mensural notation. At the bottom of fol. 73, Fuenllana explains several details about his arrangement:

In the first part of this Credo only four of the voices are played [on the vihuela]. Due to its difficulty the fifth voice is given in mensural notation, because by singing it, the imitation and the cantus firmus can be better enjoyed. Pitch the voice on the second [course] at the second fret. In the secunda pars of this Credo all five voices are played [on the vihuela] because it is not as difficult, and for the same reason and for nothing to be missing in the artifice and harmony of some duos that it includes. The voice of the bass in both the first and second pars is given in red ciphers.

The voice in mensural notation is the Tenor. The second tenor is a canon of the first tenor, not notated separately but sung a fifth lower, starting four semibreves after the first. In Fuenllana’s setting, the second tenor is fully realised in the tablature. For more information on the Mass, see https://en.wikipedia.org/wiki/Missa_de_Beata_Virgine_(Josquin). The score of the Mass is available online at IMSLP https://imslp.org/wiki/Missa_de_Beata_Virgine_(Josquin_Desprez)