OK, back to the 50's: Gretchen Christopher and Gary Troxel were high-school seniors in Olympia, WA when they composed this '59 romantic ballad while waiting for a ride home from school. They recorded it a capella at Christopher's home with another female classmate, calling themselves "Two Girls And A Boy". The original song title was changed by a Dolphin Records executive afraid that it might have been "too suggestive". The group was also renamed based upon their telephone exchange (remember those?). It was subsequently instrumentally overdubbed with the only percussion being the sound of car key in Troxel's hands. THE first group to have two #1 hits during the same year. Group? Song? For extra credit name their other '59 #1 hit.
Yesterday's answer: "Susie Q". CCR defined "roots rock" even before the term was even coined - no fancy electronics - just pure raw talent!