British jazz-funk band Jamiroquai amazes fans with a musical event in the Olympic Stadium, the largest indoor concert Arena in Russia. Jamiroquai, led by singer Jay Kay, started out as an acid-jazz band. But thanks to Jay Kay's interest in funk and disco music from the seventies and eighties, the style of the band gradually changed. Ever since Jamiroquai explored other musical genres such as pop, rock, disco, reggae, and electronic music. The band still holds the Guinness World Record for best-selling funk album in history.