You are required to keep your business income and expenses separate.
Sometimes, your business activities might overlap so much that you would list them on one schedule C. Driving for Lyft, Uber and Doordash, for example, are all basically ride-sharing. Or lawn care and house power washing could basically overlap under "home exterior services."
The first question is, is there enough overlap between being a performer and an agency for performers, to be combined as one business. I don't know the answer, but you already said two businesses, so it sounds like you have determined they are different. If they are different, you need to have separate schedule Cs for each business, and each schedule C should list the income and expenses for that business only.
