text: One small step
  I saw you take
  Along the tube
  Toward the glow
  Words I formed
  To call you back
  You paused and spoke
  Soft and low
  I can’t come back
  I can’t come back; come back
  I thought I saw
  You in your chair
  The shadow bent
  Like you were there
  I ask the dark
  What would you think
  Of coming back
  To join me