Lehár offers four bars of "O Mädchen, mein Mädchen" from his 1928 operetta Friederike in green ink. His bold signature spans most of the little card, which, though cut down from a larger piece, still bears the letterhead Franz Lehár dirigiert.

Friederike is a biographical operetta about the early adulthood of the German poet and playwright Johann Wolfgang von Goethe. Richard Tauber, a popular Austrian tenor who frequently performed Lehár's works, debuted the role of Goethe; it was specifically for him that Lehár wrote "O Mädchen, mein Mädchen," which became the most well-known number of the score.