Possible Clues:

• Shows shock, e.g.
• How one responds. One gives an encore, it seems
• Is this how one responds to traces of this mixture?
• Responds to trace elements switched with sulphur added
• Screams or jumps
• Hits back, say
• Flinches, for instance
• Seems one has traces here of a second performance
• Does a knee jerk, e.g.
• Might be traces of how one responds