Summer Girl

Katy Perry - I Kissed A Girl (acapella)
Oceana - Endless Summer (instrumental)
Summer Girl (soundcloud)
Summer Girl (official)

Criminal Down

Men At Work - Down Under (vocals, flute and guitar)
Michael Jackson - Smooth Criminal (instrumental)
Criminal Down (SC)
Criminal Down (official.fm)

Some Amaranth I Used To Know

Gotye ft Kimbra - Somebody That I Used To Know (acapella)
Nightwish - Amaranth (instrumental)
Some Amaranth I Used To Know