It is indeed Taff.
Koln Cathedral is wonderful, some years ago, I was visiting Ford on business. Afterwards on a winter evening and snowing the square was empty, in one of the Cathedral archways a young girl was playing her violin, beautifully, NOT for money but for the pure joy of the music and acoustics.
I sat outside the tavern and listened.
Both magical and unforgetable
Koln - Currywurst