Final answer:
Carol Kaye is likely the most recorded electric bass player ever, having played on an estimated 10,000 sessions including notable tracks and TV themes.
Step-by-step explanation:
The L.A. based session player who is quite possibly the most recorded electric bass player of all time is Carol Kaye. Carol Kaye has played on an estimated 10,000 recording sessions, which includes iconic tracks and albums ranging from The Beach Boys' Pet Sounds to the theme from the television series Mission: Impossible. Her prolific work spans various genres, making her an incredibly versatile and influential musician in the recording industry.