Electrelane

The first few lines are?
I heard it from the valleys
I heard it ringing in the mountains
Ah ah ah ah ah ah ah
I heard it from the valleys
I heard him singing in the mountains
Ah ah ah ah ah ah ah
The rest of the lyrics are taken from the poem A Letter Home by Siegfried Sassoon, written in May 1916.
This poem can be found in many editions of his work (we are not allowed to re-print it here).
[ The Valleys Lyrics ]