If there's one thing I love, it's when people underestimate the potential of a good idea. One thing to take note of, is that there are ALOT of Zelda songs, so a large playlist is very much within the boundaries of possibility. Second of all, I don't see how it couldn't have a storyline, I don't mean a complex one, but one similar to Guitar Hero's campaign. I mean c'mon, having it as a minigame or DSiWare? That's such a waste of an idea that could very well be successful, and that's like saying Link's Crossbow Training should have been a WiiWare, which would've made it pointless.