While staying in Darstadt, he almost completely gave up music, only writing some concertos and the operetta Abu Hassan.  His Konzertstuck for piano and orchestra is still played but not as popular as his piano solo Invitation to the Dance.  This composer's musical career began with his Opus 1, Sechs Fughetten, which he wrote while being trained by Michael Haydn, brother of Joseph.  His fame rests 
While staying in Darstadt, he almost completely gave up music, only writing some concertos and the operetta Abu Hassan.  His Konzertstuck for piano and orchestra is still played but not as popular as his piano solo Invitation to the Dance.  This composer's musical career began with his Opus 1, Sechs Fughetten, which he wrote while being trained by Michael Haydn, brother of Joseph.  His fame rests on three operas, and one anecdote relates how he learned English for his commission for one of them, Oberon, which followed 1823's Euryanthe.  FTP, name this German best known for his opera Der Freischutz.
While staying in Darstadt, he almost completely gave up music, only writing some concertos and the operetta Abu Hassan.  
Carl Maria von Weber