U2, Elvis Costello, The Pogues, The Waterboys, Emmylou Harris, Hothouse Flowers, The Everly Brothers, Christy Moore just some of the dozens of artists who contribute to an adventurous new five part TV series which traces the extraordinary return journey that Irish traditional music has made to America and beyond. Here, Liam Fay previews the programmes, talks to Philip King who originated and nurtured the project and hears many of the participants explain how they discovered the importance and influence of Irish music.