His anxiety over his perceived inability to hit the higher pitches in his range got the best of him sometimes. He would get angry and yell at himself. This anxiety would sometimes snowball to the point where we would have to cut the lesson short because he was incapable – in those moments – of producing sound without strain. His shoulders lifted, his back tightened and his face scrunched up and he could not consciously get out of this posture without walking away from the situation.