Gerl participated in a system of joint composition used by Schikander's troupe, in which Singspiele were produced rapidly by having several composers collaborate.
Franz Liszt | Franz Schubert | Franz Kafka | Franz Joseph I of Austria | Franz Ferdinand | Franz Boas | Franz Ferdinand (band) | Archduke Franz Ferdinand of Austria | Franz Lehár | Franz Josef Land | Franz Werfel | Franz von Papen | Franz Kline | Franz Beckenbauer | Franz Marc | Franz Kneisel | Franz Joseph | Franz Welser-Möst | Franz Rosenzweig | Franz Kugler | Franz Xaver Winterhalter | Franz Sigel | Franz Josef Strauss | Philipp Franz von Siebold | Franz Wilhelm Junghuhn | Franz Schreker | Franz Xaver Kroetz | Franz Xaver Gruber | Franz Waxman | Franz-Paul Decker |
In 2002, Bampton Classical Opera performed the United Kingdom première of The Philosopher's Stone (Der Stein der Weisen), a singspiel by Emanuel Schikaneder composed in collaboration with Mozart, Henneberg, Schack, and Gerl.