I used to use a few high quality midi files played on my Korg PA80. I would plug in my guitar, having removed the rhythm guitar track on the file, and play and sing along with the file. When I got my Yamaha I stopped doing that as I could get pretty close with some of the great styles. Style play gives me a fair bit of freedom, as I'm running the show not the midi file. I don't like being restricted to the midi arrangement. Having said that I have a killer midi file for John Lennon's, "COME TOGETHER" that I should check out on my PSR S750. Don't think you'd find a style to drive that song.
God Bless,
Don
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God Bless,
Don