A hundred years of radio - in a hundred questions.
Pit your radio wits!
No matter how old you are; and whether you boast a greater knowledge of the BBC or commercial sector, you'll know some of the answers.
You have up to 15 minutes to get through the questions, but you lose minutes for wrong answers - and gain only seconds for the correct ones.
Once complete, you can have another bash if you like - and watch yourself climb up that leader board. A maximum of four plays are allowed before this squeals 'stop'.
Just need your name to take part - and you may invent one if you wish; just to save embarrassment. Do give your Twitter handle, if you feel inclined (it won't be displayed on here). Leader Board only shows Top 50!