tobarandualchais seem to have changed the search method.
here are some replacement links

Willie Mathieson
http://www.tobarandualchais.co.uk/en/searchByPerson?personid=464 

Lizzie Higgins
http://www.tobarandualchais.co.uk/en/searchByPerson?personid=2900 

Jeanie Robertson
http://www.tobarandualchais.co.uk/en/searchByPerson?personid=525 

Hamish Henderson
http://www.tobarandualchais.co.uk/en/searchByPerson?personid=10 

John Strachan
http://www.tobarandualchais.co.uk/en/searchByPerson?personid=1753