Estwood, 84, said he was never the admirer of the music of the 60s'.
"I wasn't a big fan of the music that came out of the Sixties but I think the Four Seasons did some great stuff. 'Can't Take My Eyes Off You' was probably the closest thing to a classic song that came out of the Fifties and Sixties.
"I was brought up during the Forties and Fifties music-wise, when you had the great singers - the men were Sinatra, Nat King Cole, Billy Eckstine and the women were Ella Fitzgerald, Sarah Vaughn and Peggy Lee. You were just used to great singers," he said.