Freddie Bell and the Bellboys were an American vocal group, influential in the development of rock and roll in the 1950s. Details siehe: http://en.wikipedia.org/wiki/Freddie_Bell
From Rock Around The Clock. 1956.
The Philadelphia band who's performance of 'Hound Dog' was enjoyed by a young Elvis, who went on to record it soon after. They appeared in the movie 'Rock Around The Clock' singing 'Giddy Up', but had greater success in the UK (#4) and Australia.