A voluntary evening listening routine
Choose a tone, press Play when ready and start at a low comfortable level. Pause before changing tasks or going to sleep; there is no autoplay or automatic sleep-session prompt. Use the persistent player’s volume control and avoid increasing it to mask a noisy room.
Does an isolated pitch establish better sleep?
NCCIH discusses studies of whole recorded music in particular settings. Their results do not establish a sleep benefit from one isolated library pitch. Keep the routine personal and speak with a qualified professional about ongoing difficulties.