Hearing Carol Kaye.
Beginning with "La Bamba," the musician, best known as a bassist with the Wrecking Crew, played on more hits than you can name: sessions with the Beach Boys (Pet Sounds), Ike & Tina Turner ("River Deep, Mountain High") and Simon & Garfunkel ("Feelin' Groovy"), soundtracks with Quincy Jones, and the theme songs for Mission: Impossible, Batman, Shaft, and M*A*S*H.