Vocal talent aside, why was Obama's performance so much more compelling?
Obama's "Let's Stay Together" conveyed real emotion, while Romney's "America the Beautiful" did not. Romney led the song, while Obama sang the song. And the audience immediately felt the difference.
From the Green Room: If you want to convey emotion, be a singer, not a song-leader. Emotions are contagious. The surest way to get your audience to feel a certain way, is if they feel the emotion coming from you.