Hi Graham
As far as I am aware, except for the Wersi OAA software, (Which uses Wersi’s own code programming to achieve the same effect) no other manufactures produce these types of voices.
The CD – Live band mentioned in other threads, relates to the sound system.
If you listen to a Yamaha it gives you a nice rounded, slightly compressed sound, (Hence the comparison with a CD) whereas most other boards give you a more raw sound, as you get in a live performance.
To look at it another way, the Yamaha gives you a studio production sound, whereas with other boards it’s like a live concert.
If you ever get a chance to compare a Tyros 2 and a Wersi OAS instrument (With the OAA software) you will see what I mean, as with the Yamaha styles played on the Wersi, it’s like you are at a live concert, rather then in the studio. (One of the few instances where something played on another manufactures instrument, doesn’t just equal, but beats the original)
Hope this makes things clearer

Bill