Hi Seed.
I suspect what you heard was a track off Gerry O'Connors fairly new solo album,``Myriad´´.
Track number 9 is called``Cam a'Lochaigh´´.
I think this fits your discription....very fast,with Gerry on banjo,fiddle,guitar.Vinnie Kilduff on whistle,mandolin and PeterEades on bass.

This is the Gerry o'Connor that played with Four Man And A Dog.
We've had them over a couple of times for the Oslo Irish Music Festival,and I bought this CD off Gerry in January this year.Great stuff.....mostly original.

Gerry's Email is : gerryoc@iol.ie

Greetings John.