4to, pp. ‘166’ [i.e. 164], [6, index], [2], [2, errata], with an additional woodcut title-page, and a woodcut of the ‘Guidonian hand’ before the errata leaf; typeset musical examples throughout; headline and pagination occasionally shaved, else a good copy in nineteenth-century half red morocco; early eighteenth-century ownership inscription of Giuseppe Maria Baldrati of Ravenna, vicar general and later minister general of the Frati minori conventuali.