Yo Yo Ma Quote

From this site I found the following quote.
YoYo Ma: “Never make a sound unless you hear it first.”
That is, have a mental concept of that tone quality, pitch, dynamic value, articulation, etc. you want to create – before you play/sing it.

Good advice. Though I like to pull things from nowhere from time to time. Helps to stoke the mystery and the mischif.