Most likely melancholy, as that was the pint of many 'Blues' songs
It is more critical for theater actors to have their lines firmly memorized because their performances are going to be live. With a TV or film actor, for the most part, they can ask for the line and retake the shot. There are a few live television shows but for the most part, things are recorded so while it is important for film actors, it is imperative for theater actors.
If you get two or more answers on your question, you will see a message above all answers that says "mark brainliest" If you click on it, you'll mark that answer as the best one.
(Hope this helps!)