Martin ya kuma yi aiki tare da Ron Sexsmith, Faultline, da tituna, da kuma Ian McCulloch. Ya kuma raira wani ɓangare na vocals ga Band Aid 20 guda, "Shin, Sun San Yana Kirsimeti?" a karshen shekara ta 2004. A shekara ta 2005, Martin ya yi aiki tare da Nelly Furtado a kan hanya "All Good Things (Ku zo zuwa Ƙarshe)", domin ta 2006 album, Loose.
Rashin ƙarfi