In Taiwan, garbage trucks are known for playing familiar tunes like “Für Elise” and “A Maiden’s Prayer.” But behind the music are sanitation workers who quietly work before dawn and after midnight, so the streets are clean when the rest of the city starts its day. With the Lunar New Year approaching, Zoom In Zoom Out host Isabel Wang follows them on the job, getting a closer look at the people who clean up during and after the celebrations.