In his early Munich years Busch 's attempt to write libretti , which are almost forgotten today , was unsuccessful . Up to 1863 he worked on two or three major works ; the third was composed by Georg Kremplsetzer . Busch 's Liebestreu und Grausamkeit , a romantic opera in three acts , Hansel und Gretel and Der Vetter aufed Besuch , an opera buffa of sorts , was not particularly successful . There was a dispute between Busch and Kremplsetzer during the staging of Der Vetter aufed Besuch , leading to the removal of Busch 's name from the production ; the piece was renamed Singspiel von Georg Kremplsetzer .