Final answer:
Elvis Presley is the artist who recorded "That's All Right" in 1954, which was produced by Sun Records and was instrumental in blending various musical styles to create rock 'n' roll.
Step-by-step explanation:
The artist who recorded "That's All Right" was Elvis Presley. This song marked Elvis Presley's first record, produced by Sun Records company in 1954. The song was an R&B tune previously released by Arthur "Big Boy" Crudup in 1946. Elvis Presley's rendition of "That’s All Right" is a significant part of music history, as it helped blend various regional musical styles including gospel, blues, country, western, and R&B, and played a role in the emerging popularity of rock 'n' roll. Elvis Presley's musical style was known for breaking down color barriers and merging influences from both African-American and white musicians to create his groundbreaking sound.