For reasons that become obvious in the script, I have suggested that the play uses a specially-recorded version of a very old song - "John Brown's Body". 
To make this more practical for you, I commissioned my talented friends Rob Groucutt and Dan Haynes from the band "River City Portrait" to record the music and make it available for you to download. 
It comes in two modules, one to open and one to end the play. 
There is a fee of 15 to download the music (for the musicians - not me!) but I believe it's well worthwhile, and for the price of a couple of tickets it will package your production very professionally. 
You can preview the tracks here. If you wish to use the music, email us: enquiries@flyingducks.biz