[Style: Soviet war ballad, lyrical, melancholic, male vocal, emotional, acoustic guitar, steady snare drum, strings] [Tempo: slow, 70 BPM, mood: nostalgic, bitter-sweet, heroic sadness] [Lyrics topic: a soldier writing a letter home during a lull between battles, remembering his wife and birch trees. Contrast of mud and trenches with clean snow and home. No aggressive march, only quiet confession. [Structure: intro , verse, chorus, verse, chorus, bridge (spoken whisper), emotional guitar solo, chorus out]