Last year, I used to go to Bournemouth Jazz Club a lot. I was the youngest person there. All these octogenarians jiving away to the trad jazz revival of sixty years ago. Most of the band members not much younger.

"That's not what i call trad," said this old chap who had given me a lift there.

Two oldish guys used to to do the Country Hour on Radio Nottingham - Fred Lynch and Reg Cooper.

Not what I call country! opined Fred about Bluegrass. And he said the same about Dick Something , a songwriter who'd written the music for Smokey and the Bandit, he'd been booked that year for Nottingham Country Music festival - Smokey and the Bandit was the highest selling film album of the year after Star Wars. Listen to the film soundtrack - see if you can spot the non country music as Burt goes Eastbound and Down.

So the answer is yes. Its a very popular misconception that you know everything about everything. With getting old, its a bit like hardening of the arteries - you can feel it coming on!