Yeah.., def elaborate more. Are you a keys player..., are you looking for something that will primarily be a file player???? What you're needing could possibly be done by a module of some type. Give some more info and guys/gals here can point you in the right direction..
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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.