Think about how you get to know a composer’s music. It might be by playing it yourself. You may hear it on the radio, or on a mixtape a friend made you. Maybe you downloaded gigs of albums off a torrent. (Ahem.)
HAYDN107 offers another way. Dr. Walter Reichert organized a site housing all of Haydn’s symphonies (107ish), and not only can you read about each one, but you can listen to them. In fact, Reichert and his minions arranged for three separate recordings from Antal Doráti, Christopher Hogwood or Adam Fischer, if you have a feeling about such things.