Some new musical mid air collisions made by fans.

http://thehomogenicchaos.blogspot.com/2009/01/new-price-you-pay-for-black-hole-sun.html

http://sfreeman41shotblog.blogspot.com/2008/12/im-your-boogie-rez-cowgirl-underworld.html

http://www.imeem.com/trance/music/Qfbv8kxz/pf_project_feat_ewan_mcgregor_vs_underworld_choose_life_ki/

http://apollozero.blogspot.com/2008/09/jeff-klein-vs-underworld-guns-of.html

http://www.audioporncentral.com/2008/11/illegal-sunday-gameover-moloko-pearl.html

I saw this one in a ttracklisting but couldn’t download it, should be an oldie (2005)
Janet Jackson v. Nine Inch Nails v. Underworld – Headlong Down a Dark Hole (DJ Earworm mashup)
Can’t remember having the ‘pleasure’ of having heard this one before..

http://digitaleargasm.blogspot.com/2008/09/born-2-get-down.html

i’m sorry that you might have to dig through numbers of popup screens and other hellish shit on some if the sites to hear or download the songs.