Jimmy,

1) You can browse thru the styles on your hard drive while the accompaniment is playing. But when you select the style the accompaniment will stop. The delay to load the style is depending on how fast your computer is. You can test that with the demo. You can make medley-styles in OMB. That is you take a fill-in and main variation of 4 different styles and put them in the A, B, C and D variation of one style. That way you don't have to load a new style but just switch to a next variation. These styles work both in OMB as in PSR/DGX/Tyros keyboards.
2) Yes you can use a synth both as controller and sound generator.
3) You can use any midi controller for chord changes. Keyboard, bass pedals, accordion, guitar etc.

Jos

[This message has been edited by Jos Maas (edited 10-28-2003).]