[Cushman]

Out of curiosity, what do you feel qualifies it as fair use? That's a fairly specific doctrine (in the US, at least).

[driverdan]

Courts have ruled remixes/mashups like this one are fair use.

[Cushman]

What cases are you talking about when you say "like this one"? There absolutely is no statutory fair use protection for mashups in the general case, and I'd be shocked if the case law is anything but subjective.