So I Made A Mashup, And Then…
Very cool!  The mashup is really catchy and the author did a great job mixing LMFAO and Psy.The first mashup I remember listening to was the Eminem/Britney Spears mashup (http://www.youtube.com/watch?v=j98zaF5592c).  It was particularly funny because Eminem had recently dissed Britney Spears, but the ironic thing is that this mashup sounded better than the originals of both songs.The only question I have is how do these mashup-er's isolate the vocals and instrumentals so clearly?  Are the vocal and instrumental tracks available for most songs these days, so that fans can create mashups?