" ... we no longer wake up with the dawn chorus and settle down for the night with the hum of crickets. But just as our circadian rhythms are affected by exposure to natural light, sounds can act as cues for our sense of time and how we feel.
...
There are alarm clocks that can help with your acoustic circadian rhythms by playing birdsong to wake you and the sound of waves lapping as you go to sleep... try creating your own soundtrack for the day. "

― , Design A Healthy Home: 100 ways to transform your space for physical and mental wellbeing