RE: the French Horn
My husband always wanted to play the French horn, so one year, he bought a beautiful instrument and made arrangements to take lessons from a retired band teacher.
The teacher would come to my husband’s office for his lessons. He wouldn’t let him play the French horn until he could blow the mouthpiece correctly.
My husband dutifully practiced. Later he learned people in the neighboring offices had begun to look around for the source of a strange “moose-like” noise. He finally graduated to the instrument, but accidently dropped it, and that was that.