Der Stein der Weisen oder die Zauberinsel The Philosopher`s Stone or the Enchanted Isle is a two-act singspiel jointly composed by Johann Baptist Henneberg Benedikt Schack Franz Xaver Gerl Emanuel Schikaneder and Wolfgang Amadeus Mozart in 1790.

Mozart composed

1. Act 2 - Duett Lubano Lubanara `Nun liebes Weibchen`.
2. Act 2 - Finale `Miau! Miau!`.
3. Act 2 - Finale `Fort armer Jüngling`.

https//en.wikipedia.org/wiki/Der_Stein_der_Weisen