Terrence Paul Melcher (born Terrence Paul Jorden; February 8, 1942 – November 19, 2004) was an American record producer who was instrumental in shaping the mid-to-late 1960s California Sound and folk rock movements. His best-known contributions were producing the Byrds' first two albums Mr. Tambourine Man (1965) and Turn! Turn! Turn! (1965), as well as most of the hit recordings of Paul Revere & the Raiders and Gentle Soul. He is also known for his collaborations with Bruce Johnston and for his association with the Manson Family.

Melcher was the only child of actress/singer Doris Day; his father was Day's first husband Al Jorden, and he was adopted by her third husband Martin Melcher. Most of his early recordings were with the vocal surf acts the Rip Chords and Bruce & Terry. In the 1960s, Melcher was acquainted with the Beach Boys and later produced several singles for the group in the 1980s and the 1990s, including "Kokomo" (1988), which topped U.S. record charts.

Source: Wikipedia (https://en.wikipedia.org/wiki/Terry_Melcher)