639Hz Baby Sleep Music 🌙 Gentle Solfeggio Lullaby with Koshi Chimes | 3.5 Hours

A warm, gentle lullaby at 639Hz to help your baby relax and sleep soundly through the night. 🌙 A soft, constant 639Hz tone plays in the background, with handpan, marimba and koshi chimes tuned in harmony with it, at a slow, calming 50 BPM. ✨ The night-sky animation, with twinkling stars, drifting clouds and a softly glowing moon, stays dim and peaceful, so it won't light up the nursery. Perfect for: • Bedtime and naps • Settling a fussy baby • A calm, cozy sleep routine • Unwinding for parents, too 💤 Tip: play it at a low volume and let it run through the night. Subscribe to Sleep Master for new calming sleep music every week. #BabySleepMusic #639Hz #Solfeggio #Lullaby #SleepMusic #KoshiChimes