i know the huge guitar chord thing is sampled/inspired by the Jay Z song...but i think the beat is a different story
but to achieve "that" sound..liam used a kracked copy of Fruity Loops 4
i emailed it to him
jay z got the idea for the extra guitar sample from an album called the grey album by dangermouse which was basically a mash-up of the beatles white album and Jay-z's black album it did get put on sale but then got pulled staright away due to sample rights etc...........
heres the track ::