I went to the eye doctor and the first thing I heard when I walked into the office was a country song with a lyric about sunglasses. It made me think about an eye doctor playlist of songs about eyes (Brown Eyed Girl, Bette Davis Eyes) or glasses and sunglasses (Sunglasses at Night). Dentist offices can have their own playlists with songs about smiles and teeth. These playlists will make people think more positively about the service you are about to receive. I wonder if there are any songs about colonoscopies.