Can you convert styles for the S-900? If so.., why not get some 3rd party styles (you can get tons of them from members here who have various brands of arrangers). Convert those.., do a little revoicing, tweeking, and see what happens.
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.