That's All Right / Blue Moon of Kentucky

That's All Right / Blue Moon of Kentucky is the 1954 debut single Elvis Presley recorded at Sun Studio with guitarist Scotty Moore and bassist Bill Black. The record pairs a sped up, blues-derived reading of Arthur Crudup's "That's All Right" with a country waltz reworking of Bill Monroe's "Blue Moon of Kentucky," exemplifying the raw, genre-blending rockabilly sound that marked Elvis's early style. Sparse, rhythmic accompaniment, prominent slap bass, and Presley's emotive vocal delivery give the sides a loose, live-in-the-studio feel that helped bridge rhythm and blues with country traditions.