Strange and deep songs

"The delicate leaves of the birch rapidly become yellow as the fire climbs swiftly along the white trunk; the resinous bark , the branches, smoulder with a blue smoke; thin jets of flame curl up with a wonderful beauty, whistling as they do. And in that low whistle fragments of songs seemed to ring out - strange and deep songs ..." 

- Maxim Gorky, Fragments From My Diary