A single sheet, written on recto only, containing a puzzle canon (possibly based on the puzzle canon, also on 'Salve sancta parens', by Ludwig Senfl printed in the "Liber selectarum cantionum", Augsburg 1520).

A musical square consisting of 6 x 6 boxes (text: "Salve sancta parens", clef: c-3, c-3, c-3, f-3, f-3, f-3) is surrounded by two circular staves. The Marian invocations ("Sancta Maria ..." and "Salve virgo ...") written on it are placed on the lines instead of the notes. Syllables in capital letters probably indicate longer note values, while lowercase letters indicate shorter ones. Below are two horizontal staves, each with four voice incipits (clefs: g-2, c-3, c-4, f-4 and c-1, c-3, c-4, f-4). Here, too, there are text syllables instead of notes.

The circular staves likely represent the entire melodic and textual material of the two circular melodies, while the horizontal ones indicate the entry points of the voices. The musical relationship between the square-form canon "Salve sancta parens" and the two circular melodies ("Sancta Maria" and "Salve virgo")—simultaneous performance?—remains to be clarified.

Further Latin sayings and verses (some with musical themes) are notated along the margins.

The dedicatory formula "Reverendo in Christo patri ac domino" appears at the top of the page. The dedicatee is not named.