On the Subject of Licensed Music as it Applies to Puzzle Games

Much ado was made of the whole licensed music 'feature' in Lumines 2, mostly in the negative, with comments to the effect of "Gwen Stefani can kiss my ass" being the usual. Now, having experienced it, I can't find any real fault apart from liking or disliking a particular song. Quite simply, did DDR suddenly start sucking the moment they used licensed tracks instead of the disposable custom J-Pop of the earlier games? Certainly not.