Complex sentence: The final movement, "Swans migrating", takes the form of a long crescendo for orchestra, with the sounds of whooper swans, before both birdsong and orchestra fade, as if into the distance.
Split into simpler sentences: The final movement, "Swans migrating", takes the form of a long crescendo for orchestra, with the sounds of whooper swans. At the end both birdsong and orchestra fade, as if into the distance.