To be honest, I'd never heard of this book until…well, about 5 minutes ago. But The Big Beat Scene by Royston Ellis does sound interesting.
First published in 1961 (and republished with a new foreword by the author), the book is said to chronicle Britain's teenage generation, as well as the jazz and emerging pop music of the era. Ellis himself was just 16 when he wrote it – hanging around coffee bars and jazz clubs in Soho, describing 'in poetry' the life he saw around him.
I'm trying to get a review copy, but you can take a chance on it now – the book is available now in paperback for £11.39.