The KN7000 that I bought as a back up came with expansion boards 1 and 2. That keyboard is seldom played. I don't use the sounds because when you create a sequence with them the sequence doesn't sound the same on a keyboard that does not have the boards.

That keyboard is stored away, so the following is from memory. I do remember going through some of the sounds and found a lot of organs that I liked. But, I felt that most of them could be replicated by editing sounds that are already built in. I remember several unique Celtic voices that were neat. Don't remember much big band stuff except for several nice clarinets and some strings. There were also some nice guitar sounds.