Like i coward I hide inside (Cloud is hidding under Zack)
never to be seen (You dont see Cloud in disk one at all)
and like a dog I obey anyone (Cloud being taken over)
Anyone who might know me (Sephiroth controlling him,or Jenova controlling him)
The ball I toy with I hand to my master (Black materia)
As my memories scream and try (Child Cloud trying to stop his older self,remember?)
But its no use for I'm almost gone now (Clouds already fully under sephiroths controll at this point)
and so is somones life (Aeris dies shortly after)

Yup,you got it.