The most electrifying invention was the Celtic Rock band Horslips. It was somehow perfectly representative of where we were. On one level it was entirely ersatz. It was formed in 1970 by an advertising agency in Dublin that needed a ‘rock band’ for a TV commercial. Three of its own staff played band members. But they needed a keyboard player and somebody knew Jim Lockhart, who was an accomplished multi-instrumentalist with a strong interest in both classical and Irish traditional music.