赤ちゃんが寝かしつけられるには

・テンポ（BPM）と心拍数：60〜70BPMは新生児の休息時心拍数と近く、安心感を与える。

・反復性と予測可能性：赤ちゃんは予測可能なパターンに安心するため、繰り返しのフレーズが効果的。

・音域と音量：高周波（2,000Hz以上）よりも、低めかつ柔らかい音域の方が睡眠導入に有効とされる。

・母親の胎内音との共鳴：一定のリズムや低音は胎内音に近く、赤ちゃんにとって安心材料となる。

というのがあるので、

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Compose a gentle lullaby specifically designed to help babies fall asleep, based on neuroscience and infant sleep research.

🎼 Style & Instrumentation: Use soft acoustic instruments such as music box, harp, celesta, and slow ambient pads. Avoid sharp percussive sounds.

🎶 Tempo: Set a slow, consistent tempo around 60–70 BPM, mimicking a resting heart rate.

🧠 Tonal Characteristics: Use repetitive, consonant harmonies in major or pentatonic scale to induce calmness. Avoid dissonance.

🌊 Rhythm: Apply predictable, loop-like phrasing to soothe the baby through familiarity.

💡 Scientific Basis:

Leverage findings from studies showing that music with a tempo close to a heartbeat (around 60 BPM) reduces cortisol levels.

Incorporate gentle descending melodies which activate the parasympathetic nervous system.

Avoid lyrics, or use soft, vowel-rich nonsense syllables (e.g., “laa-loo-naa”) if vocalization is desired.

🛏️ Mood Tags: [calming, lullaby, sleep aid, for babies, ambient, music box, slow, dreamy]

Title the song something peaceful like: “Moonlight Dream” or “Sleeping Petals”.

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みたいにするといいと思います！

作った曲のサンプルを送っておきます！