Gagaku is a traditional Japanese court music that is often played during sleep to promote relaxation and tranquility.

In some cultures, it is believed that music can help people to fall asleep more easily, stay asleep longer, and improve the quality of sleep.

Bhajan is a devotional song in Indian music that is often played during sleep to promote relaxation and spiritual well-being.

In some cultures, it is believed that music can help to reduce stress and anxiety, improve mood, and promote relaxation.

Guzheng music is a traditional Chinese plucked string instrument that is often played during sleep to promote relaxation and tranquility.

In some cultures, it is believed that music can help to enhance creativity, improve memory, and boost cognitive function.

Kora music is a traditional West African string instrument that is often played during sleep to promote relaxation and tranquility.

In some cultures, it is believed that music can help to promote social bonding, strengthen community ties, and enhance cultural identity.

Bossa nova music is a Brazilian genre of music that is often played during sleep to promote relaxation and tranquility.

In some cultures, it is believed that music can help to heal physical ailments, cure mental illnesses, and enhance spiritual well-being.

Classical music is a genre of music that is often played during sleep to promote relaxation and tranquility.

In some cultures, it is believed that music can help to increase productivity, enhance athletic performance, and improve academic achievement.

Folk music is a genre of music that is often played during sleep to promote relaxation and tranquility.

In some cultures, it is believed that music can help to connect with the divine, transcend the physical world, and achieve spiritual enlightenment.

Didgeridoo music is a traditional Aboriginal instrument that is often played during sleep to promote relaxation and tranquility.