Thank you for your hard work today.Go to bed and listen my piano.I will deliver songs of various genres with adult jazz cover arrangements.We hope that the piano, a healing instrument, will help you to have a good night's sleep.Non-REM sleep is important for a good night's sleep.5 habits to achieve deep non-REM sleep and improve sleep quality1. Take a bath 90 minutes before going to bed2. Exercise lightly every day3. Wake up and bedtime are constant4. Supper at least 2 hours before going to bed5. Listen to my piano