Pandora One Desktop App is only available to people subscribed to the streaming website's paid service, Pandora One. It's small and has a great, sleek appearance that will fit most peoples' aesthetics. Pandora One Desktop App is also a nice looking app. Using the Music Genome Project, Pandora One Desktop App will analyze the music content of the songs or artists you enjoy and will subsequently play music that shares some of those defining characteristics. Pandora One Desktop App does the same thing, except straight from your Mac's desktop this time around. The more songs you rate, the better Pandora gets at personalizing song suggestions for you. It does this by taking into account music you give either a thumbs up or thumbs down after listening to it. Pandora is a music streaming website that helps you discover new music and artists.