Here are 2 suggestions on how you can include a contract with your beats.
1. Zip up the contract file with your beat.
When your customer downloads the beats, the contact is attached to the file.
2. Include the contract as a second file download with the beat.
The same way you would add the beat to download, you would add the contract to download. So that contract link will be added in the purchase email and also to the checkout page after their payment is made.
How Can Customers Sign Contracts?
This feature is not built into the Music Maker theme. You can Google “Sign Contracts Online”.
SignNow.com looks like it’s an affordable option.
I have no experience or affiliation with the link above.