How would you define "one-hit wonder"? I could say it's someone with only one top-40 hit – but that would include many artists whose songs are pretty much forgotten today. Among them are Dave Gardner, Sunny Gale, Tommy Dee, Johnny Ferguson, Barry Young, Monty Kelly, Sam Harris, James Gilreath, Kenny O'Dell, Aquatones, Mashmakhan, New England, Nu Tornados, Romeo Void, Tuxedo Junction, Don Shirley Trio and Clefs Of Lavender Hill.