What's a song you absolutely LOVE, but would NEVER play at a gig? Maybe it doesn't suit your voice, it's too obscure, goes on for nine minutes, has 14 chord changes before the first chorus, or you already know the audience would stare at you like you'd just started reading from the electricity bill. We all have songs we'd love to play if audiences weren't involved. What's yours, and why doesn't it make the setlist?