Fused R&B with a little Country & Western to produce Rock'Roll changed music around the world and allowed Black artists to enter the white music scene and not be totally covered by white artists. Recorded a record whic has become one of the highest selling singles in music history which has been number one in many countries some repeatedly. The name of the song is Rock Around the Clock of course. Also popularized an expression which lasts some fifty years later with See You Later Alligator.
Everything starts somewhere. If rock and roll started the revolution, Bill Haley with "Rock around the Clock" was the battle cry.