Blue Moon Peace in the Valley blues Sun Records Santa Claus Is Back in Town pop RCA Victor rockabilly country ballad rock and roll gospel
At RCA Victor, Presley's rock and roll sound grew distinct from rockabilly with group chorus vocals, more heavily amplified electric guitars and a tougher, more intense manner. While he was known for taking songs from various sources and giving them a rockabilly/rock and roll treatment, he also recorded songs in other genres from early in his career, from the pop standard "Blue Moon" at Sun Records to the country ballad "How's the World Treating You?" on his second RCA Victor LP to the blues of "Santa Claus Is Back in Town". In 1957, his first gospel record was released, the four-song EP Peace in the Valley. Certified as a million-seller, it became the top-selling gospel EP in recording history. Presley would record gospel periodically for the rest of his life.
