A lullaby is a gentle melody that has been calming infants for epochs. These hymns are often easy in form, with familiar melodies and lyrics that describe dreams.
A good lullaby can help a child fall asleep quickly, https://youtube.com/playlist?list=PL9MA18nixW__bOMUT9dxRavfZM82qEeYy&si=TUbK6WSPIpr-1n66