The Proclaimers are to perform at this weekend’s memorial service for former First Minister Alex Salmond, alongside folk musician Dougie MacLean and the singer Sheena Wellington.

The Reid brothers, who have long been supporters of an independent Scotland, are to perform their 1988 single, Cap in Hand, at a service to remember Mr Salmond at the weekend.

The song, which includes the lyrics, “But I can’t understand why we let someone else rule our land”, became an anthem of the Scottish independence movement during the 2014 referendum, when Mr Salmond headed up the Scottish National Party (SNP).

The service for the politician, which friends and family said would allow people to say farewell to the former first minister and reflect on his life and achievements, is to take place at St Giles Cathedral in Edinburgh on Saturday, St Andrew’s Day