"Many composers today don't know what the human throat is"

This quote by Elisabeth Schwarzkopf is a commentary on the existing state of classical music composition. She is suggesting that lots of modern authors are not knowledgeable about the capabilities of the human voice, and therefore are not composing music that is suitable for vocalists. This could be due to the fact that lots of authors today are not classically trained, and may not have a deep understanding of the human voice and its range. Furthermore, making use of innovation in music composition has become significantly popular, and lots of composers might be more focused on developing electronic music than writing for the human voice.

Schwarzkopf's quote is a tip that the human voice is a powerful instrument, and that composers need to understand its abilities when composing music. It is important for composers to comprehend the variety of the human voice and to compose music that is suitable for singers. By doing so, they can create music that is both gorgeous and accessible to a wide range of listeners.