I think they just might..... I noticed that there are several styles on my PSR-550 that came directly from the original DJX....

Squeak

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Love me and I'll love you back..., but touch my beer and I'll break your freakin legs...:)
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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.