Scotty Moore is one of the great pioneers of rock guitar. As the guitarist on Elvis Presley's Sun Recordings, he may have done more than anyone else to establish the basic vocabulary of rockabilly guitar licks, as heard on classic singles like "That's All Right," "Good Rockin' Tonight," "Baby Let's Play House," and "Mystery Train." Moore took the stinging licks common to both country music and blues, and not only combined elements of country & western and R&B, but added a rich tone through heavier amplification. His concise, sharp phrasing, and knack for knowing both what to play and when not to overplay were perfect accents to Presley's vocals. Although his Sun riffs may be his most famous, Moore in fact continued to play on Presley records until the late '60s and laid down some of his best accompaniments to the star on RCA discs. Unsurprisingly, the best of these were in Elvis' early RCA years in the 1950s, when Moore added more wattage and recklessness to his riffs to come out with classic solos on "Hound Dog," "Jailhouse Rock," and "Too Much," among others.