 The result, "Riverdance", was a seven-minute display of traditional Irish dancing that became a full-length stage production and spawned a worldwide craze for Irish dancing and Celtic music and also won him a Grammy.It was released as a single in the UK in 1994, credited to "Bill Whelan and Anúna featuring the RTÉ Concert Orchestra".It reached number 9 and stayed in the charts for 16 weeks.