When I was doing jazz concerts in America, I would use the biggest names I could find.
If you look at my audiences, even in Europe, they're hardly teenagers.
I allowed artists to play for as long as they felt they could justifiably continue to create.
If you don't get substantially what you want, be ready to walk. And don't look back.
The history of all big jazz bands shows was, first they played for dancing, and then they played for singing.
The public, hearing pop music, is, without knowing it, also soaking up jazz.