My tonal re-calibration has had a positive effect. In church. Music is led by a band with guitars at the centre. Guitars are happiest in sharp keys. They are ‘capo’-ble of playing in flat keys, but the choice to play in such keys is unusual. My new tonality transposes a lot of the music into flat keys, giving a satisfying mellowness to the music; an escape from the dominance of A, D and G majors. It will be a long time before this new B flat, E flat and A flat ambience palls. PTL.