As a fan of both celtic traditional and bluegrass music I was wary of a CD claiming to be a hybrid - too often it means an unsatisfactory compromise where original flavours become watered down and insipid. I need not have worried - Tim O'Brien has produced one of the most amazing and rewarding musical journeys I've followed for some time. Not only do the players from the two traditions blend instinctively and harmoniously but the tracks , mostly songs, are marvellous journeys, following traditonal paths to the frontiers of folk music. There are superb performances all round, vocally from O'Brien with guests Paul Brady, Maura O'Connell, Kathhy Mattea, Del McCoury etc and musicians Altan, Frankie Gavin, Jerry Douglas, Earl Scruggs, Seamus Egan and a host of others and the sound is fresh, acoustic and vital, requiring no production gimmicks or effects. Standout songs for me personally are "Mountaineer is Always Free", "Lost Little Children", "Wandering" and the awesome "John Riley" (co-written with Guy Clark) although there is not a weak track on the CD. It is obvious that for Tim O'Brien this has been a labour of love. If you like acoustic music, from any tradition, either side of the Atlantic, you'll love it. Several of my friends have bought it on my recommendation and agree it is brilliant.