If it's just walking out for a talk, something like Rings by Aesop Rock, which is all about creatives regretting stopping what made them happy in creations to do what others felt was important, or what they felt was important to others.
So I put this question to you now: what's yours? This is for a live forum, so it can be anything, no concern for DMCA takedowns; you can change it once a year, and you can have a backup song in case someone else on the same panel uses your primary music.