Check out this channel......fantastic job of filtering these instrumental sounds!!! Bunch of Britney, Katy Perry, etc.
http://www.youtube.com/watch?v=d6uOYfh9KnA Stuff you can't even hear on normal instrumentals........it's like a musical drug :-)
i agree, these are incredible! a musical drug for sure. I love Teenage Dream. Till The World ends is really dancey and heavy.
Amazing!