From the U.S., two great musicians who play contra dance tunes (and related stuff), e.g., American, Irish, Scottish, and French Canadian tunes, etc., are Laurie Andres, from Seattle, Washington, and Jeremiah McLane, from Brattleboro, Vermont.

Laurie and Cathie Whitesides (sometimes with W.B. Reid and Bob McQuillen -- who's most known for piano, but also plays accordion) are the Rhythm Rollers. Laurie has recorded with other folks, as well.

Jeremiah is known especially from his work with Nightingale.

They're both outstanding. You can find their recordings at the Country Dance and Song Society and Andy's Front Hall, among other places.

~ Becky in Tucson