<p>Riverdance exploded across the stage at Dublin's Point Theatre one spring evening in 1994 during a seven-minute interval of the Eurovision Song Contest hosted by Ireland. It was a watershed moment in the cultural history of a country embracing the future, a confident leap into world music grounded in the footfall of the choreographed kick-line. It was a moment forty-five years in the making for its composer.<br>In this tenderly unfurled memoir...