The future "King of Rock and Roll," Elvis Presley had his very first professional, commercial recording session this very day in 1954. Little did anyone know what lie ahead and how music would soon be changed forever. It was at Memphis' historic Sun Records studios, and the two songs were cover songs. The A-side was a cover of a blues classic by Arthur "Big Boy" Crudup called "That's all Right," and the B-side was a remake of the Bill Monroe country classic "Blue Moon of Kentucky." Prior to this historic session, Elvis recorded a version of the old standard "My Happiness" as a birthday gift for his mother (but it wasn't released as a single).