A lullaby is a soothing melody that has been pacifying infants for centuries. These songs are often basic in structure, with constant melodies and lyrics that evoke feelings.
A good lullaby can induce slumber quickly, https://youtube.com/playlist?list=PL9MA18nixW__bOMUT9dxRavfZM82qEeYy&si=TUbK6WSPIpr-1n66