Ian Davison's song lyrics, music and a recording can be found at the following Scottish schools site.

http://www.educationscotland.gov.uk/scotlandssongs/index.asp


It's a great resource, curated by Ewan McVicar.

Ian's song can be found at this URL

http://www.educationscotland.gov.uk/scotlandssongs/primary/genericcontent_tcm4554521.asp