Bill Craddock and the Blue Notes were a prominent American rockabilly and country band in the mid-20th century. Known for their distinctive blend of Southern rock, blues, and country influences, the band was led by frontman Bill Craddock, whose gritty vocals and energetic performances were a signature of their style. Their most influential work, the chart-topping hit "Rubber Duck", helped define the rockabilly genre and remains an enduring classic. Craddock's innovative fusion of country twang and rock rhythms significantly influenced subsequent artists in both genres.