This one is definately an inventory of an intellectual man, as we can deduce from the large amount of books listed.

Many of the books are classics, and a large number of them traduced to castilian. Among the listed we find: Tully "de Officiis", "Vegetius de re militari en italia", "dant en castella", "triumfos de petrarca en castella", "sermones de frater roberto en italia", "vita christi en castella", "tito livi en castella", "papiano en castella", "las heticas de harestotil", Thomas Aquinas, Juvenal, Virgil, Ovid, several books of hours and Bibles. 

Although we have just two mentions of musical objects: 

"Item un saltiri scrit en pergami de ma cubert de posts ab cubertes ab los dos caps del trencador de argent sens la balda" 

"Item tres cascavells de argent ab una cadena de argent un viscarci [?] y una branca de coral y un caxal de loy guarnit de argent".