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Yes, it is okay to sleep to classical music. In fact, it is believed to improve sleep quality because it is soft, calming, and has a steady rhythm. Some classical music can have a beat that mirrors a resting heart rate, which is around 60-80 beats per minute. This can help slow down your heart rate and breathing, making you feel more relaxed and ready for sleep.

However, this might not be the case for everyone. Individual preferences and reactions to music while trying to sleep can vary greatly. If you find that classical music keeps you awake or distracts you, it might be best to try something else, such as white noise or a completely silent room.