`Lo-fi ambient background for audiobook about 1970s Soviet school. Warm, cozy, slightly melancholic. Detuned upright piano, vinyl crackle, tape hiss, no drums. Slow tempo (65 BPM), very quiet, heavy sidechain compression to make room for voiceover. Sound of old reel-to-reel in empty classroom, long dark plate reverb, low-pass filter below 8kHz. Subtle transitions via cassette clicks or page turns.`