And Donny... DON'T DO IT! stop

You will gush about it for a couple of months, then gradually the realization that it isn't a Yamaha PSR will dawn on you, and then you will start putting it down and go back to your S950...

Honestly, I can't think of an arranger that is more the polar opposite of the S950 than the BK-9! Sound, OS, styles, feel, lack of VH, screens, it's everything the PSR isn't. And the PSR is everything the BK-9 isn't!

Play Fran's (when he gets one!), enjoy what it does, but go back to your one true love!
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An arranger is just a tool. What matters is what you build with it..!