Lisa = 'constant craving'.
http://www.youtube.com/watch?v=kG09ehDlo2U
David = 'Boys don't cry'
http://www.youtube.com/watch?v=iJ7QRNG4gEY&feature=fvst
Charlie = 'Tears of a clown'.
http://www.youtube.com/watch?v=k2kxlZDOHeQ
Sophie = 'Anything by Britney Spears'.
http://www.youtube.com/watch?v=k2kxlZDOHeQ
Rodrigo = 'Shoot it up by sigue sigue sputnik' with the words 'SHUT UP' in place of 'shoot it up'.
Siavash=
http://www.youtube.com/watch?v=cvgUdrzGNys
Did I miiss anyone?