Nirvana Vs. Calvin Harris

Not a teen
instrumental : Calvin Harris - I'm not alone
acapella : Nirvana - Smells like teen spirit

The Smashing Pumpkins Vs. Elton John

Your 1979 song (August 2009)
instrumental : The Smashing Pumpkins - 1979
acapella : Elton John - Your song

Trust Vs. Franz Ferdinand

Ulysses' trust (August 2009)
instrumental : Franz Ferdinand - Ulysses
acapella : Trust - Antisocial