We've got to key the style to the hardware itself of the arranger. How do Yamaha protect the IDG stuff and sound packs?

Until the styles can be protected, and yet still allow a certain amount of user editing and tweaking, any appreciable style development is basically confined to new models (the hardware to play the styles acts like a kind of dongle - you can't play T3 styles on a T2 if they use the newer features without a LOT of work). If Yamaha, Roland, Ketron, Korg, whoever don't work on a way to protect new styles, they will never put much effort into it (or third party style houses either).

And, I'm sorry, but basically, user styles are a pale shadow of the factory ones, by and large. Little Mega voiced parts, stiff drums, no feel...

I almost feel this is the #1 thing we should call for from our manufacturers. Having to buy a new model to get fresh new styles because the factory can't even break even on style packs for older models is insane...
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An arranger is just a tool. What matters is what you build with it..!