STAR POWER! Joseph Sheppard ROCKS OUT on the BGT stage!

What does it take to be a rock 'n' roll star?

Not only does Joseph Sheppard have the hair, the leather jacket AND the guitar - he's also got the star power!

Nevermind Johnny B Goode - Joseph IS good!

Check out Britain's Got Talent: Unseen onITV Hub for even more amazing talent!