I'd second the last review,
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This review is from: Heartstring Sessions (Audio CD)
An excellent album all round with some of the best traditional playing that you'll find anywhere - spiced by deviations into some quite unexpected styles on the way.
All four musicians on this album are, as the last reviewer said, maestros in their own right, and true masters of their instruments - the two lady musicians are sisters, and their playing is instinctively complimentary in a way that only happens when players have clearly worked together since childhood. Also, the pairings of Newman and Ni Chathaisaig and McGlynn and Casey are also long standing so again, the musicians work very well together.
Put all four together with this fusion of skills and abilities, and this album is the end result - stunning stuff.