Nighttime view of Rio Tejo from the Sodré Pier, Lisbon, Portugal

The audio begins with a serene ambiance of nighttime at the Sodré Pier in Lisbon, Portugal. The gentle whispers of the Rio Tejo, or the Tagus River, create a peaceful backdrop. The river's cool, calm water reflects the faint glimmer of the city lights, giving life to the darkness. Then, the distant hum of a boat's engine breaks the tranquility. The sound grows louder as the boat draws nearer, cutting through the dark waters of the river. The boat's rhythmic thumping against the waves creates a soothing lullaby that complements the soft rustling of the river. As the boat moves further away, its engine's hum slowly fades back into the quiet night, leaving behind the rhythmic lapping of the river against the pier. The audio ends with the tranquil sounds of the nighttime at the Sodré Pier, lingering on the haunting beauty of the Rio Tejo under the moonlight.