Picture this: A cello perched on a lit stage. The music director calls for the next hopeful, who sits down beside the instrument — but doesn’t play it. Instead, the musician proceeds to describe their experience learning the cello and playing with previous orchestras. They also provide contact information for people to call to confirm that the candidate can, indeed, play well. At no point does anyone ask the candidate to so much as touch the bow.
Orchestras would never hire new members that way, just as casting directors would never sign an