You sort of hinted at my assumptions being correct

He sang as if he knew me in all my dark despair

And then he looked right through me as if I wasn't there

But he was there, this stranger, singing clear and loud

Strumming my pain with his fingers

Singing my life with his words

Killing me softly with his song

Killing me softly with his song

Telling my whole life with his words

Killing me softly with his song