And the four guys struck musical gold

GROWING up on the wrong side of the tracks in 1950s New Jersey, there were only three options available to you, according to a main character in Jersey Boys, Clint Eastwood's all-too-measured yet still-entertaining take on the hit Broadway musical.

You could join the army, get mixed up with the Mob, or become famous. The guys known collectively as The Four Seasons managed two out of the three: It wasn't an easy ride, but it worked out alright in the end.

Any band with more than a hundred million records sold and a solid catalogue of enduring pop songs - many of them now more than half a century old - must have done something right. Jersey Boys tells the tale of how - despite doing their level best to mess up success - they struck musical gold.