When You're Young is one of The Jam's finest moments, with Paul Weller dispensing hard-won wisdom (from the grand old age of 22 or something, youth becoming relative the older you get) -'the world is your oyster but your future's a clam, it's got you in it's grip from before you're born, you think you're a king but you're really a pawn'. There's something about the music that's very democratic too- guitar, bass and drums all equal in the mix and the dynamics. Then the hair raising breakdown followed by 'you used to fall in love with everyone..... any guitar and any bass drum'.
The other thing about it is the video- the kids, passers-by and members of the public, all look pretty much exactly how I remember 1979-80 looking. Except without The Jam miming on a bandstand. Never saw that happen.
I saw a striped blazer just like the one Weller's wearing in this video recently, reduced but still pricey. Was tempted I have to say.