Do you want to make money playing music for corporate events? You just might be able to get a few well paying clients if you put your marketing hat on and target businesses with a band booking letter.
First, identify large businesses or corporate event planners who have or are in charge of organizing large events.
You can do a search for corporate event planners and get their mailing address and email address. You can do the same search for large businesses within a 20-40 mile radius (for example) using mailing list tools like infousa.com.