There are only really two contenders for this. Genesis - Supper's Ready and Wham! - Wham Rap. And while the level of technical difficulty is higher with Supper's Ready I have to admit that while I know the sound of all the words - I can make the right noises at the right time - I don't know what all the words actually are. No such problem with the Wham!. That George Michael - such lovely diction.
Why do I know all these words? Because everything about this is brilliant and I used to listen to it all the time. Now George has soften and mellowed it's easy to forget how sharp and bright those first singles were, how subversive they were. I always think of Wham Rap as the flipside of UB40's One In Ten; another great song about unemployment but so miserable and whiny. I'm not going to suggest that Wham's response to joblessness is more accurate or valid, more reflective of the reality of recession and it certainly shouldn't be the basis for policy - but when you were 16 and surrounded by unemployment you didn't need telling you were 'a statistical reminder of a world that doesn't care', you needed showing that you could get an incredibly cheap holiday to Fuengirola and buy espadrilles. And in a Thatcherite world a statement of pride in joblessness was somehow radical and certainly appealing.
The radicalism is underscored by the changes made to the original release (1982) which flopped but was big at The Blue Note and the Co-Op disco. The hit version you've probably heard was from 1983 and it downplayed the 'DHSS' in the chorus. And apparently the BBC weren't happy with the 'make a claim, sign your name's all you have to do' bit.
Oh, and just listen to the sound of it. It's one of the definitive records of that age. Big, bright and beautiful.
Do you enjoy what you do? If not, just stop.