Tony just sat and watched as Lucifer and Ziggy performed the song. That voice though...it got the engineer right in between his chest. The Arc Reactor maintaining the normal rhythm of his heart beat. Just allowing his ears to swallow every word, Tony was transfixed totally on the stage. All the empathy washing over him to cause his whole body to become immersed.

"That's--damn, you've got a good voice. Deep, man. Really, deep emotion there."

Were there tears welling up inside Tony's eyes. Only slightly because he was being moved. Genuinely. Music was a powerful thing indeed. Ziggy on that guitar? He was good too.