Davis is a king of Christmas music.
"We do approximately 100 cities within about five weeks in the fourth quarter of every year," says Davis.
Davis' other passion is harnessing the healing power of nature sounds. He calls it ambient therapy.
"It puts you someplace different than where you think you are," says Davis.
It's a, sort of, 3-D sound that Davis records with special equipment out in nature. Experts at Mayo Clinic have installed ambient therapy systems in certain operating rooms and patient rooms.
"Whether it's ocean, whether it's streams or rivers, whether it's an autumn day in the Midwest — I can put you in the circumstance," Davis says.
Patients say they feel transported to calmer places. Research shows the sounds can help patients relax, and some reported feeling less pain.
"It completely can take you away from the distracting sounds and noises in a hospital room," says Davis.