The Song Angels Cannot Sing

I know a song that will silence even angels' singing
I know a tune sweeter than the birds' song at each morning
I know the words that escape the wind's most gentle blowing
I know the song even angels cannot sing

It's the song of redemption
The song that my heart sings
It is praise for the Lamb
who took away my sins
All creation marvels at the song
Even angels cannot sing
It's the song of redemption
The song of the redeemed