Located in the small Minnesota city of Chatfield, the Chatfield Music Lending Library is the largest collection of brass band music available for hire in the world — almost 100,000 pieces of music! "We're the only place in the world where if you need the E-flat cornet part for a Sousa march, we can lend you the music," its secretary explains. But how did the collection end up in Chatfield? It happened almost by accident. Read all about it.