Welcome to Roland-world!

Everybody rides for free! (except the new OS for the E80, which adds mp3 playback and about a dozen new styles. It's a whopping $30 or so... mind you, you'd pat more than that for the styles alone, from Yamaha).

So much for so-called 'closed' arrangers, eh? Truth is, for quite a while, they ALL have been 'open'. It just depends on the company whether it CHOSES to write new OS's or not...