 The choke also haunts the world of musical performance. You can play this in your sleep and you've performed it dozens or hundreds of times before and then suddenly you blank out or you get confused and you almost feel like you don't know the piece at all and you don't know what comes next. Noah Kageyama has a podcast and blog called The Bulletproof Musician. He coaches musicians on the psychological dimensions of performance. Sandra Bezic does the same for figure skaters.