KORG, makers of electronic instruments for over 40 years, have created a DS-based instrument. The DS-10 software for Nintendo DS will be released this summer in Japan. No word yet on when or if the rest of the world will get localized versions, but you can bet this will be a hot import item. Head on over to this site for more details and an MP3 sample of a song created with the KORG DS-10.
[Thanks for the tip, James]