For 10 points, name this Ottorino Respighi piece, the sequel to a work about fountains.
They can be found at the entrance to the catacombs of St. Sebastian, around the Piazza di Siena, and at the site of a World War II atrocity in the Fosse Ardeatine caves. All of those directly inspired passages in this work, which opens with a portrait of "ring-around-the-rosy" at the Villa Borghese. The score goes on to call for medieval brass instruments in the finale and a tape of a nightingale near the Janiculum in the third movement. For 10 points, name this Ottorino Respighi piece, the sequel to a work about fountains.
They can be found at the entrance to the catacombs of St. Sebastian, around the Piazza di Siena, and at the site of a World War II atrocity in the Fosse Ardeatine caves.
The {Pines of Rome} [or I {Pini di Roma}]