Man walks out onto stage, sits down at the keyboard, plays the entire Goldberg Variations from beginning to end, gets up and walks back in again.

At least, I imagine that’s what happened: I missed the first couple of variations and, being new here and all, opened the wrong door into the church in – of course – the noisiest manner possible. A lovely church, great playing, no asking price; a good night! Part of a little-advertised Bach season at the Bühlkirche that I only learnt about because I walk past it every morning and spotted the poster in the nick of time.