There are a series of these master classes on YouTube, with members of the Berlin Philharmonic helping younger players in key orchestral excerpts. This one concentrating on the first few bars of Strauss’ “Till Eulenspiegel,” and the famous and tricky horn solo therein, is particularly interesting because it shows the meticulous attention to detail that great orchestral musicians bring to the parts they play. Both of these horn players here are very good, by the way, but the Berlin’s Stefan de Level Jezierski is something else, as you will no doubt hear.