I have had 5 of these over the years. Some OCEAN tracks make you want to scramble for higher ground or throw rocks at the sea gulls. Some THUNDER tracks, head for the storm shelter. Husband would freak at the HEARTBEAT. Nightmares of Bill Cosby's Chicken Heart? This one seems to hit all the right peaceful vibes! Perfect shape to Velcro under the overhead cupboard above the bed of our RV to drown out noisy neighbors and nearby snorers!