Sean, 35, has followed in his father's footsteps and made a career in music but said fame frightens him.
According to UK newspaper Daily Express, he said: 'I have a fear of fame, as my therapist would tell you. But I'm a musician, first and foremost.'
He added that some people are shocked by his resemblance to his famous Beatles star father.
Sean said: 'I look like my dad. I remember someone saying I was trying to look like my dad because I was wearing glasses. Can you believe that? I'm blind without them. People look at me and they see my dad.
'They think I'm trying to be famous or something, which is completely misguided.'