Claim: Prinz Methusalem is an operetta, which is a lighter, condensed form of opera, and it's premiere cast consisted of Josef Matras, Antonie Link, Caroline Finaly, Wilhelm Knaack, and Thereses Braunecker-Schafer.
Evidence: Prinz Methusalem (Prince Methusalem) is an operetta written by Johann Strauss II to a libretto by Karl Treumann, after Victor Wilder and Alfred Delacourt. It is lighter than opera in terms of its music, orchestral size, length of the work, and at face value, subject matter. Josef Matras Antonie Link Caroline Finaly Wilhelm Knaack Therese Braunecker-Schäfer