How Can We Keep From Singing?

(I think this is an old civil war song that has been recaptured lately)

My life flows on in endless song
Above earth's lamentation.
I hear the real, thought far off hymn
That hails the new creation
Above the tumult and the strife,
I hear the music ringing;
It sounds an echo in my soul
How can I keep from singing?

What through the tempest loudly.....