Calvin, who practises for six hours a day and has been playing since he was 10, saved up for his £2,000 PRS guitar with money earned from busking and is putting out his first album, with dad Richard, next month.
He is often to be seen at Bankers Corner with one of his parents, and playing for a couple of hours. His 'set list' includes the crowd-pleasing, Back In Black by AC/DC.
Calvin, a pupil at Causeway School, said, "I really want to be a rock star and my influences are Wes Montgomery, George Benson and Jimi Hendrix.
"I'm forming a band with my dad and I'm hoping to get ten tracks for an album done by the end of August, with instrumental tracks and session singers."
Calvin's first guitar was bought for him as a birthday present after his parents tired of his Xbox computer game addiction.
He quickly grew to love it and now can earn up to £350 in a day playing for passersby in Eastbourne and on Brighton seafront.
His mother, Sue Prior, said, "It is such a shame kids are having Xboxes thrown at them now. I have always said give something constructive to a child, they can then grow up and take it into a career or a hobby. And that is what Calvin has done."
Her son is mainly self-taught but has learnt chord structure and jazz and blues styles from his dad, who he says is also an influence.
He has developed his own sound, incorporating riffs and licks and appears at as many local jam nights as he can.
The ultimate dream is to be one of the country's top guitar players by the age of 18 but for now he will spend most of his summer holidays appearing in public, trying to make the £1,100 he needs for a new amplifier.
Calvin has featured in the national press and has his own MySpace page at www.myspace.com/calvinakabones.
And you can see him play at www.youtube.com/user/calprior