One of the absolute best groups for the traditional sound is the Tannahill Weavers. Outstanding musicians and great guys. If you get the chance to see them in person, they're even better.

Look for the CDs from the group Silly Wizard too. Their live CD is one of the best on the market. Again... great musicians and great guys.

For those who like The Cheiftains, they have a few CDs that mix Celtic trads with American trads in "Another Country" and the "Down The Old Plank Road" releases. There's nothing like originality!