Michael,
I am very sorry but I tried to use PSRUTI
specifically for this purpose and unfortinately it was unable to do the job for me. I contacted the developer with my questions, he promptly answered but based on his answers I realized that this feature either doesn't work or not very user-friendly. Please understand that I am not bashing the program. It is a good apllication but it just can't be used for generation of a MIDI file with a required chord progression. Busker v3.1 is much better for this purpose but it is not free and you can't change styles when you play it using your Yamaha keyboard.

Best regards,

Alex