"The Laggan" were a very popular band from Glasgow throughout the 1970s. Follow the link above to Nigel's website for more information. Brian Miller and Arthur Johnstone are still active on the Scottish folk scene.
There are 26 tracks - with some duplication - available to purchase for download through "iTunes".
There was always a left-leaning political side to their music, more than traditional Scottish, I think it would be fair to say. They were great entertainers, and a great band to see live.