I love to change styles while I'm playing. If you've got a bank full of swing styles, there's nothing cooler than using them for different sections. I don't know about Yamaha, but one of the strengths of Roland's is that there is NEVER a 'glitch' going from one tone to another or one style to another. Totally seamless switch-overs...

So you can either program different registrations that call up just the way you want them (this allows for tempo changes between sections) or just put your tone and tempo lock on, and call up styles willy nilly.

For something as specific as Bill's 'And the Angels Sing' I would just program two adjacent User Programs (sort of Yamaha Registrations, but ten to a page on the touchscreen) with the Swing and Latin sections preset for each. A simple touch on the screen (or a dedicated F/S up/down on the FC-7) and you go from one section to another.

Easy...