Hi Jerusha,
I think you can enjoy knowing that you are one of the few lever harpists who are playing jazz and pop professionally. I think that the rest of us who do this use pedal harps. It is so much easier! On pedal harp I can play and improvise in any key I want to, and do such neat things as pedal slides, pedal glissandi, fast chromatic changes, etc. You are brave to do this type of music on a lever harp, and I truly admire that. Keep doing what you are doing. The harp world needs more harpists like you.
Very best wishes,
Balfour