Not quite a lyric but rather a chorus...

It's my life - my pain and my struggle
The song that I sing to you it's my ev-ery-thing
Treat my first like my last, and my last like my first
And my thirst is the same as - when I came
It's my joy and my tears and my laughter it brings to me
It's my ev-ery-thing
Treat my first like my last, and my last like my first
And my thirst like the first song I sang