CF-related sleep issues: 'Mucus of the night'For those unfamiliar with the Broadway sensation Ӑhantom of the Opera,Ԡone of its most famous songs is called Ӕhe Music of the Night.ԉ was..#Cystic Fibrosis·disorders.solutions·Mar 13, 2022CF-related sleep issues: 'Mucus of the night'