Apparently the Wii is not experienced, as the console will not be getting any Jimi Hendrix download content for Guitar Hero: World Tour. According to MTV Multiplayer:
"In this case, licensing restrictions from Jimi Hendrix’s people mean Activision Blizzard must offer the music as a “track pack” and not singles. The restriction, combined with Nintendo’s rules, mean Wii players won’t see the music."
This is a major bummer for gamers that only have access to Guitar Hero: World Tour on Wii. Hendrix is one of the best guitar players in the history of the universe and proof the lefties are (generally) superior people. It's a shame that Wii gamers will miss out on Hendrix' six-string wizardry.