I was talking to someone who had recently been to a performance of the Magic Flute about the Queen of the Night's aria and he mentioned something about the top harmonics not being very well in tune. His comment suggested that the very high notes in that aria are harmonics simply by virtue of being very high notes. I've never heard of the term 'harmonics' in relation to singing, but then I've never studed vocal production. Was he talking out of a hole in his head, or is that really how such stratospheric notes are produced? Or is it only one of several possible methods of production? Or does the term mean something different in this context? I think I remember correctly that in string playing a harmonic has a particular, usually thin, timbre, but that the same note can also be produced in the 'ordinary' way.
Please could I have an explanations in layman's terms... Thank you.
