Tinnitus Relief Masking Sounds - Sunset - Sunset. Sunset: The evening hours, the inbetween time for animals, plants and insects. A few moments of repose. Water lapping on the shore of a nearby lake, and crickets start their chirping chorus. Songbirds wind down the day and occasional squawks from waterfowl float across the water. A good sleep aid, useful for masking home and workplace noise.