On paper, it ought to be. Haydn is one of the most important personalities in classical music, inventor of both the symphony and the string quartet. Mozart called him Papa Haydn, declaring: "He is the father of us all." Haydn, though, was not content to create the moulds. He went on to fill them with 104 symphonies and 68 quartets, adroit and diverting but seldom edge-of-seat gripping. He also produced concertos for eight different instruments; a host of masses; two great oratorios, The Creation and The Seasons; 13 Italian operas and six in German; any number of trios and piano pieces. Not to mention hundreds of Scottish, Welsh and English songs.