Listeners who find themselves frustrated by their inability to achieve a refreshing night of sleep may find positive results from the audio techniques of Dr. Jeffery Thompson. A clinical researcher who has spent many years studying the correlation between sound and health, Dr. Thompson's synthesized sounds promote delta frequencies, which slow brain activity and accompany the deepest states of sleep. NATURAL MUSIC FOR SLEEP gets its "natural" edge from the use of nature sounds like ocean waves and bird calls to enhance the music. Combined, the elements form gentle, atmospheric music that is useful for combating insomnia and finding rejuvenation through sleep.