I remember joking with friends about adding a keytar and just having a whole list of 80's music… looks like its about to become a reality. Just another accessory they can make money off of.
Like previously said, a keyboard would have been much more fun. The keytar is essentially going to be the same thing as a guitar, but I'll give it a shot providing the song list is decent.
I can see the Rockband games being like Guitar Hero within a year or so. The only thing that keeps me interested in the Rockband games is the fact they add a lot of sweet songs for download.