I roto i te 2005, Martin mahi tahi ki a Nelly Furtado i runga i te ara "Katoa nga mea pai (Haere mai ki te mutunga)", mo tona 2006 album, Loose. i te rua i te wa i rongo ki te waiho i te tokorua, i muri i te mahi e rua i runga i te Glastonbury i roto i te 2002. Nelly Furtado kata e pā ana ki te reira, mea, "Yeah, e kore ano ia e mohio ki te reira i roto i te kanohi o te tamaiti", co-tuhia ki Coldplay kaiwhakanao Rik Simpson. kua mahi tahi ano hoki Martin ki Ron Sexsmith, Faultline, te Streets, ko Ian McCulloch. waiata ano ia i te wahi o te reo mo te Band Aid 20 kotahi, "E mohio ratou te reira Christmas?" i te mutunga o te tau 2004. kua tonoa hoki ia ki te mahi tahi ki te kaiwhakanao hip hop Jay-Z o Kanye West i roto i te kōrerorero kōrerorero ki te haere mai i roto i te Royal Albert Hall i te waenganui o te tau 2006 "He aha te ingoa o te kaiwaiata?" i roto i te kōrerorero ki te
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