pandora is a website, pandora.com. They "hold" your preferences and music. When you go there the first time you start an account, which means nothing to do w/ money unless youopt for "no ads". You choose a password, etc and then they ask you to choose a song or performer that you like and they offer other suggestions that you can "like", or "dislike", etc, etc, etc. They also direct you how to set up your "stations".
There is an app for ipads, etc., otherwise, on a pc, you can set the site as a favorite or bookmark, like all your others and when you go there your stations come up.
As i mentioned, after a couple of months, i was getting almost ALL songs or performers i like and seldom have to pay any further attention to it when it's playing, altho, if you ignore them too long, they will stop playing music and ask " are you still there?"
I love it! Hope you will too........ Jean