nocturns

/ˈnɑktərnz/
noun
  1. A musical composition that is inspired by or suggests the night, usually quiet and dreamy in character.
    • The pianist played a beautiful nocturn that filled the room with a calm, nighttime mood.
    • She listened to a soft nocturn as she watched the stars through her window.
    • Chopin's nocturns are some of the most famous pieces for solo piano.