composer
Which German composer was assistant to Wagner at Bayreuth 1880-1, taught at Barcelona, Frankfurt and Berlin, and is best known for his opera Hansel and Gretel? Which German composer's only opera was 'Fidelio'? Which great composer, composed so many songs between 1815 and 1828 that the Oxford Dictionary of Music doesn't attempt to list them all? Which British composer wrote the opera Troilus and Cressida?