It seems a little unfair to include the circle and metropolitan lines as they use the same rolling stock and run on the same tracks in the centre of the city.
Incredible fun. I got every one wrong except the line I live on and use all the time. I couldn't tell any of the others apart much, but I knew my line instantly, without any doubt. Fascinating.
I got 8/9. Been away 2 years. The ones I rarely used or which don't have obvious "tells" that are hardest. For me, Jubilee is the most obvious - very distinctive sound.
Nice! It would be fun to include some of the other sounds on the tube like the door closing chimes or the sounds the doors make when opening and closing.
The Bakerloo sounds are indeed pretty distinctive (I lived near Kilburn Park for a while and knew it well!). But I think the easiest of all is the Jubilee line. Those melodic sounds from the traction motors that rapidly change pitch when accelerating/decelerating are so distinctive and unique.
A bit deep to put district and circle as options on the same question. Don’t they use the same rolling stock and cover very similar stations?
I found Bakerloo was the easiest to identify.
I got 5/9 on the Tube Sound Quiz!
(better than random!)