I created a playlist of Clash songs to go with "Rock The Casbah" and got a bit of inspiration in regards to Stevie. Along with Bob Marley, some of the Clash's deep cuts are among the lowest selling in the game. This was a somewhat scary thought, given the historical significance of the "London Calling" album.
It made me think about how sales in Rock Band are so often predicated on how much people know the songs. I found myself somewhat irritated by the way people on the boards seem to treat Stevie Wonder like he is a one hit wonder (no pun intended) with "Superstition"... but that may have been unfair. Is it wrong to begrudge people the fact that "Superstitious" - as a GH track - is probably the only Stevie song many Rock Band'ers would know?
As I've cited before, Stevie Wonder could actually fill a full game (or at least an AC/DC style release) with hit songs... but many of these songs would be seemingly unrecognizable to younger fans. Perhaps it is more realistic to expect low sales on his tracks because of that, no matter the quality of the music.