The song 'L'ANGELO CADUTO' by Salmo, featuring Shari, delves into the concept of angels and belief in them. The lyrics explore feelings of loneliness, longing for connection, and the struggle to be understood by others. The metaphor of angels represents hope, comfort, and a desire for someone to see and understand the inner turmoil and pain. The song touches on themes of isolation, mortality, and the yearning for companionship and understanding in times of darkness and despair.