How old would Clive Sarstedt be today?

Clive Robin Sarstedt, who also recorded as Clive Sands, Wes Sands, and Robin Sarstedt, was a British pop singer and instrumentalist active from the late 1950s. He was best known for his 1976 UK hit "My Resistance Is Low", a version of a song written and originally recorded by Hoagy Carmichael. He was the younger brother of singers Eden Kane and Peter Sarstedt.