The unwieldy billing of this concert may in time give way to Heartstring Sessions, the name of the album that sisters Nollaig Casey and Maire Ni Chathasaigh and their partners have just released to show what can happen when two duos pool musical resources.

Star rating ****
The unwieldy billing of this concert may in time give way to Heartstring Sessions, the name of the album that sisters Nollaig Casey and Maire Ni Chathasaigh and their partners have just released to show what can happen when two duos pool musical resources.

Loadsastrings might even suffice, since as well as Casey's fiddle and Ni Chathasaigh's harp, there are two guitars and a mandolin involved in producing a repertoire that has its heart in Ireland but goes down through America's old time, bluegrass and country picking traditions to an Argentinean waltz designed for dancers, presumably, who don't like to hang around with the same dance partner for too long.

There is tremendous breadth and depth of experience involved here - from classical orchestral work to Donal Lunny's grooving folk-rock band in Casey's case - and it shows through in consummate playing, brilliantly articulated jigs, reels, hornpipes and Galician dance tunes, and the marvellous combination of Newman's burning-fingers urgency and McGlynn's poker-faced, apparently effortless high-tempo melody playing and steady, lush-toned rhythm guitar work.

Newman, their most natural public speaker, also contributed entertaining introductory tales, including an insight into how the oral tradition worked in his home town, Watford, resulting in versions of tunes that, however impressive, were as accurate as Chinese whispers.

A song in either set from Casey, one in English, the other in Gaelic, added extra variety, although there's probably enough contrasts in their various quartet and duo instrumentals to satisfy most ears, from Ni Chathasaigh's starkly keening harp lament for Limerick and McGlynn's stately, almost regency-period Reminiscing, to the foursome's breathtaking dash through bluegrass godfather Bill Monroe's Goldrush