Don Juan und Faust is a German stage play by Christian Dietrich Grabbe, published in 1828, with music by Albert Lortzing.
Its 1829 premiere at the Landestheater Detmold made it the only work of Grebbe's to be performed in his own lifetime - contemporaries criticized its pessimism, though it was praised by Kierkegaard in his Either/Or for being "founded on evil" in an extraordinary way.
He courts Donna Anna, daughter of the Spanish ambassador, and provokes a duel with her naïve noble fiancé Octavio due to his own selfish desire and lust for genius.
The devil had appeared to Faust in the form of a knight and bought his soul in return for a promise of supernatural knowledge and power.
In anger at her steadfastness, Faust kills Anna with his magic but then starts to mourn her and loses all his vitality now she is dead.