Wanted to add one more thing. Patrick Sky taught me the importance of pacing, and that means really evaluating what the audience has show you whether through applause, quiet applause, their faces and body movements.

If you decide to do "Sad-eyed Lady of the Lowlands" and you haven't nailed it in three or four lines, well, the next twelve minutes will be the longest of your life. And that something you'd have to decide before playing the song. It also depends on whether you get interactive with the audience. Their feedback is their expression of how they think you're doing in your job: entertainment. Listen to them.