10시간 따듯한 수면음악 + 풀벌레소리 🎵 마음이 편안해지는 음악, 불면증치료음악, 잠잘오는음악, 수면유도음악 (Nostalgia)

Originally published on YouTube by 힐링트리뮤직 Healing Tree Music & Sounds, 15 April 2020. The file arrived here named only by its eleven-character YouTube id, with no title at all; the title above and the details below were recovered from YouTube's own API and cached, so the record no longer depends on that query being repeatable. The archive holds 4 videos from this channel.