Adults don't have a fixed time to listen to alpha music. Alpha brainwave music is a kind of brainwave music with special rhythm, which was produced in the European Renaissance. It is a kind of music with 8- 14 Hz and 60-70 beats per minute. Listening to this kind of music can make people relax, reduce stress and anxiety, and is beneficial to the health of the brain. Everyone can choose the time to listen to music according to their own preferences and needs. It is generally recommended to listen to music for 20-30 minutes at a time.