Undersong: Sleep Sounds

Most sleep apps hand you a library and a subscription banner. Undersong hands you one card. At six in the evening a new card is waiting. Turn it over and it plays. There is no library to scroll, no playlist to assemble, no decision to make at the hour you least want to make one. Tonight's sound is tonight's sound. Every sound is synthesised on your device, in real time. Nothing here is a recording, so nothing loops. The rain never repeats itself. The bowl never rings the same way twice. An eight-hour night is eight hours of sound that has never existed before and won't exist again. THE DECK Twenty-four sounds across six suits — rain, ocean, wind, fire, bowls and noise. Every card carries a line about what that sound does to attention, and why it lets you go. The album remembers which ones you have met and which are still face down. THE NIGHT • Set a timer from fifteen minutes to eight…