Michael,

I am talking about playing melodic solos, working from a tremolo, with that thumb role on the bottom(well, it isn't really a role, but I don't know what else to call it)--

Meanwhile, what do you need those synthesizers for? (talk about alienating people!!) You ought to be able to to play a rolling bass line, fill in the chord, pick out the melody, and drop in the odd fiddle break, all with your thumb and forefinger!!!