sentence: Tchaikovsky told his fellow musicians he was working on a "fantastic" ballet called The Nutcracker: "It's awfully fun to write a march for tin soldiers, a waltz of the flowers, etc."
modified: fix grammar: Tchaikovsky tell his fellow musicians he was working on a "fantastic" ballet call The Nutcracker: "It be awfully fun to write a march for tin soldiers, a waltz of the flowers, etc."