Ben, left... Dan, right Ben Dan Die Fledermaus neither Dan nor Ben... but a bit of their stuff...

Die Fledermaus

dē•'flā•dər•maus
noun
1 · German for "the bat"
2 · world's finest Chambergrass band
3 · comic operetta by Johann Strauss II, libretto by Carl Haffner & Richard Genée