The choir book mainly contains music for mass and for the Holy Office: “Propriumssätze” (the changing parts of mass during the liturgical year), hymns, Marian antiphons, masses, the magnificat (Canticle of Mary), and polyphone responsiones in Missa as well as some further musical elements, alternatingly written in German and Latin, and two motets by Orlando die Lasso (1532-1594). Most of the compositions are preserved anonymously; nonetheless, a substantial block with music attributed to Orlando di Lasso may be singled out (fols. 106v - 166r). In addition, the volume contains several pieces by the little known composers Christophorus Clavius SJ (1538-1612) and Augustinus Zappler. In addition, it also contains the information contained in this Band anonymously delivered pieces: Missa super illud Quem dicunt homines (fol. 231v-249r) by Jean Mouton and the Missa Bellica (fol. 249v-271r) by Clement Janequin.
The manuscript consists of at least two parts. One of the manuscripts is to be considered as rather hastily executed and uses egg-shaped note heads. The second part, instead, is decorated lavishly. The manuscript was preserved in the Munich Albertinum, founded 1574, but because of the time of its creation (before 1571-1578) it cannot have been made there. Since the two scribes can be identified as Petrus Spirensis and Johannes Flander SJ, it is very likely that its origins go back to a Jesuit context, not least since the Albertinum was also under Jesuit administration. The paper of the manuscript comes from the Pötschner paper mill above the Isar Au (river plain), which produced paper from ca. 1500 up to the period of the Thirty Years War.