Rondini translates to "swallows," the migratory birds. It's a beautiful and somewhat less common word in everyday Italian, making it stand out in the lyrics.
In the song, the line "Che forse gli angeli Son tutte rondini Che migrano per noi" (That perhaps the angels are all swallows that migrate for us) creates a poetic and evocative image. It suggests that these birds are messengers or symbols of hope, bringing comfort and connection across distances, much like angels.
Piume is Leo Gassmann's reflection on love that feels almost too fragile to hold onto. He sings to someone whose innocence and softness make them seem apart from the harshness of the world, reassuring them that even from a distance, they can still live through him.
The song leans into a gentle, spiritual image: he imagines that angels are really swallows, migrating birds who leave for a season but always find their way back. That is how he frames loss and longing here, not as an ending, but as a kind of seasonal absence.
The sea and the stars become witnesses to the relationship, always singing of her even when the rest of the world moves on without her. By the end, the repeated line about dreaming and aching shows how memory and longing keep circling back, the same way the swallows do.