"All Improvviso Amore" is an Italian language song sung by American singer Josh Groban, which means "Suddenly Love" in English. The song talks about the feeling of unexpected love which can change one's destiny and make life more meaningful. It describes the feeling of being overwhelmed by love, like the sea that invades the heart and soul, and brings salvation. The lyrics also reflect on the beauty of the universe and its elements, like the wind blowing gently, the moon shining bright, and the vast sky above. The narrator feels the presence of their loved one everywhere, even in the stars that light up the night sky. Overall, the song is about the power of love that can heal and bring light into someone's life. It portrays the power of natural love that is like breathing in the air, always there and always present, making life beautiful.