As John has said above, Hal, Voice Creator and Voice Set are two different birds.

However, I personally have never used Voice Creator, and have relied on Voice Set for any edits I needed.

Most times, you only need to change attack time, release time, decay, Filter (Harmonics), Brightness, and Voice Set does that admirably.

The Tyros4 also came with a Voice Editing CD ROM, but I have yet to use it. It enables you to edit the Tyros4 Voices on your computer and create your original sounds.

I didn't see this CD ROM in Tyros5's specs, but maybe it has yet to be finished?

That is not to say Voice Creator isn't important, as it is a must have for some users, but, since I'm more of a switch on and play (with a fair bit of style editing) kind of player, it has never been needed.

Ian