Country singer songwriters the Davis Sisters (Mary Frances Penick, better known as Skeeter Davis with Betty Jack Davis and Ernie Newton on Bass) on stage at the Grand Ole Opry circa 1951 in Nashville, Tennessee. (Photo by Bob Grannis/Getty Images)
Rear view of an sound engineer sitting in the control booth, looking through a window, with musicians in a recording studio on the other side of the glass, New York City, New York, circa 1955. (Photo by Paul George Schutzer/FPG/Archive Photos/Getty Images)