Black Sabbath es una banda inglesa de heavy metal formada en 1967 en Birmingham por Tony Iommi (guitarra), Ozzy Osbourne (voz), Geezer Butler (bajo) y Bill Ward (batería).
Master of Reality es su tercer álbum, fue editado y lanzado al mercado discográfico en agosto de 1971. Su publicación, tras el éxito de su álbum anterior, consolidó y definió parte de la estética de la banda, así como también es un referente ineludible en la historia del Heavy Metal. Podemos destacar temas como "Children of the Grave" y "Sweet Leaf" que se han transformado en marcas registradas de la banda. Vendió más de 500.000 unidades en EEUU antes de salir a la venta pública. El segundo tema del álbum es "After Forever", donde la banda emplea por primera vez una introducción con sintetizadores y fue publicada en singel en 1971
Have you ever thought about your soul - can it be saved?
Or perhaps you think that when you're dead you just stay in your grave
Is God just a thought within your head or is he a part of you?
Is Christ just a name that you read in a book when you were in school?
When you think about death do you lose your breath or do you keep your cool?
Would you like to see the Pope on the end of a rope - do you think he's a fool?
Well I have seen the truth, yes I've seen the light and I've changed my ways
And I'll be prepared when you're lonely and scared at the end of our days
Could it be you're afraid of what your friends might say
If they knew you believe in God above?
They should realize before they criticize
that God is the only way to love
Is your mind so small that you have to fall
In with the pack wherever they run
Will you still sneer when death is near
And say they may as well worship the sun?
I think it was true it was people like you that crucified Christ
I think it is sad the opinion you had was the only one voiced
Will you be so sure when your day is near, say you don't believe?
You had the chance but you turned it down, now you can't retrieve
Perhaps you'll think before you say that God is dead and gone
Open your eyes, just realize that he's the one
The only one who can save you now from all this sin and hate
Or will you still jeer at all you hear? Yes! I think it's too late.