Sam Phillips Got a Hole in It"), Charlie Rich, Junior Parker, and Billy Lee Riley recorded for Sun with some success, and others, such as Jerry Lee Lewis, BB King, Johnny Cash, Roy Orbison, and Carl Perkins, became stars. Phillips's pivotal role in the early days of rock and roll was exemplified by a celebrated jam session on December 4, 1956, with what became known as the Million Dollar Quartet. Jerry Lee Lewis was playing piano for a Carl Perkins recording session at Phillips's studio. When Elvis Presley walked in unexpectedly, Johnny Cash was called into the studio by Phillips, leading to
Recording studio a signal from one or more of the microphones in the studio could be routed to the loudspeaker in the echo chamber; the sound from the speaker reverberated through the chamber and the enhanced signal was picked up by the microphone at the other end. This echo-enhanced signal—which was often used to 'sweeten' the sound of vocals—could then be blended in with the primary signal from the microphone in the studio and mixed into the track as the master recording was being made. Special equipment was another notable feature of the "classic" recording studio. The biggest studios were owned and