Yes, I found the original file and it was Ketron SD7. I am sorry for the confusion. Seemed like a good question but I should have know the answer!
The things that got me thinking were the lack of automatic "help" with the guitar bends, and the uneven volume in the breaks, variation transitions and ending.
Because the drums sounded so real, I thought it was an audio style, and it was, but not Yamaha.
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DonM