I have,

The Chieftans
Clannad
Dagda
Dervis
John Doan
Gaelic Roots
Gaelic Storm
Karl Jekins
David Kincaid
Steve McDonald
Seamus McGuire
Donal Murphy
Noirin Ni Riain
Solas
Alan Stivell
Tannahill Weavers
David Wilke
Wolfstone
23 compilations
10 pipe bands

That is just on one shelf.