In this book the motet lyrics of Philipthe Chancellor (ca. 1165-1236) are subjected to critical editing, translation and comment. While the lyrics treated in the first part can certainly or in all probability be credited to Philip, the second part is devoted to poems in which the assignation is disputed. The commentary is followed by an interpretation that analyses the interplay of music and lyrics combined with arguments regarding the authenticity of the respective lyrics. In doing so, both the religious Latin lyrics with which we are no longer familiar, as well as the motet as a musical-lyrical work of art become tangible.