Arthur "Big Boy" Crudup (also known as "Pop" Crudup) (August 24, 1905 – March 28, 1976) was a delta blues singer and guitarist He is best known outside blues circles for writing songs later covered by Elvis Presley (and since covered by dozens of other artists), such as "That's All Right Mama", "My Baby Left Me" and "So glad you're mine", and by many claims, "Blue Suede Shoes"Arthur "Big Boy" Crudup is probably best known today as the writer and original singer of Elvis Presley's first record, "That's All Right" But during his heyday, Crudup was a fairly popular blues singer in his own right He rarely performed live, because he suffered from stage fright, but he did make a lot of records that sold pretty wellSep 24, 13 · That's All Right
That S All Right Wikipedia