Daren, keep working on your singing voice, possibly even taking a voice class at a local community college, or even taking some basic private voice lessons to develop the foundation of good vocal technique.

I've found (at least in my case) that both market-ability, gig pay, and tips (especially) are a LOT higher when you add singing to your keyboard performance. Doing BOTH (keyboard playing & singing) really well, is the key to success in this biz.

Scott