Where can you find Trumpet music for Waltz of the Bankers from Die Hard with a Vengeance?

I am looking for trumpet music to the song noted above (also known as When the Ants go Marching, and When Johnny comes Marching Home). I want to put on a bit of a concert with a few friends at the high school talent night, so if you can find music for the other parts too, like the flutes of percussion, that would be useful.