Want to listen to Taylor Swift? Sure! Want to hear something from Post Malone? Absolutely! Dua Lipa? Halsey?

They’re all there at your fingertips. You don’t have to pay a dime to hear any of them, either—unless you want to listen to your songs without ads in between. But not to worry. It’s all perfectly legal.

This free, instant musical gratification is brought to you by Spotify, a Swedish technology company that has been streaming music since 2008. It started as an idea to combine music and technology. It has become one of the most popular ways for the world to listen not only to music but also to podcasts, news shows, and more.