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 specific orders never to mop the bare wooden floor for fear it might alter the acoustic properties of the hall. There were several other features of studios in this period that contributed to their unique "sonic signatures". As well as the inherent sound of the large recording rooms, many of the best studios incorporated specially-designed echo chambers, purpose-built rooms which were often built beneath the main studio. These were typically long, low rectangular spaces constructed from hard, sound-reflective materials like concrete, fitted with a loudspeaker at one end and one or more microphones at the other. During a recording session,