The intro figure bass line is played by Carol Kaye, one of the true legends of music recording. For over fifty years, she played the bass and guitar on probably tens of thousands of recordings, thousands of them becoming hits, as a member of the “first call” studio musicians; so called because the were the first called by producers. They became known as “the wrecking crew” although Ms. Kaye disliked that sobriquet. All this, by the way, while maintaining a household and raising her children. She was and still is an astonishing talent and an amazing woman.