Lady Gaga , Shakira, Ke$ha , Rihanna Vs Britney Spears Up Down (Josh R Mashup Remix) by Gerardo Andres Barona published on 2011-12-07T16:13:48Z Genre Pop Rock Comment by elegantone Loved this. The mixture of these songs is really ingenius. 2015-02-16T16:04:48Z