It’s a lovely Sunday afternoon, a rare, almost summery day. Here in Paris the city has organized something called the Fête de la Musique, which I think means Music Celebration Day, or near enough. The idea is that if you play an instrument, on this day you should get it out and play it in public. The amazing thing to me is that people do. Everybody is on the street and a lot of them are carrying, even playing, instruments. It’s free and great fun.