Donny, I think the OP wanted to change the octave of the bass in the style.
Here is his question...
"The bass and background instruments settings on the Tyros 4 in styles, I was sure it was possible to move them to a different octave. Somtimes the bass is just too high in the style and so on. Is it possible and how?"
I think Midiplayer will do it.
Ian
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Thanks Ian, yes you are right that was the question, and thanks for the connection to the reference manual, I'll test it out and let you know TedS