OK Jim - this is not specifically you - this is anybody.
What we offer as pro keyboard players is a product/service. It has to marry with perceived needs of the audience by the retailer of your product/service.
So firstly we must find out what is in demand and how that compares with what we currently have to offer.
This analysis involves the use of the 8P's which are: Product, Place, Price, Positioning, Publicity, Promotion, People, and Process.
As John has intimated there are many alternative 'products' you could offer including DJ/Disco which I also provide as a matter of interest... Which ones are in most demand and there is a shortage of supply.
Where is it most likely (place) that you would be able to offer this product/service.
What price can you demand for this product/service.
How are you going to create the right image in the minds of your customers by positioning both yourself and your product/service to meet this demand.
Publicity is the above the line activity which you employ to communicate about yourself to potential customers e.g. advertising.
Promotion is the below the line activity which you employ. e.g PR pack and demo CDs etc.
People is who are you going to approach and how...and then what Process are you going to use to approach them and clinch the deal.
Rog