This week's episode of The Thistle & Shamrock features music by Mairi Campbell. Courtesy of the Artist hide caption

This weeks' episode of The Thistle & Shamrock features music by Kris Drever. Chloe Garrick /Courtesy of the artist hide caption

Noel Duggan, Ciaran Brennan, Moya Brennan, Padraig Duggan and Paul Brennan of Clannad on November 24, 1982. H. McCarthy/Getty Images hide caption

This week's episode of The Thistle & Shamrock features music by Battlefield Band. John Slavin/Courtesy of the artist hide caption

Mike Katz and Alasdair White of Battlefield Band, whose music is included in this week's show. John Slavin/Courtesy of the artist hide caption

Hear music from Battlefield Band in this week's episode. John Slavin/Courtesy of the artist hide caption