Apple Music / iTunes Store: While Apple Music is a subscription service, the iTunes Store still allows you to buy the song individually. These files integrate perfectly with iOS devices.
Amazon Music: You can purchase the individual MP3 for "My Everything" or the full Revelation album. This is a "buy-to-own" option where you get a DRM-free file.
While many users search for a direct download, streaming services have become the primary way to listen. Platforms like Spotify, Tidal, and YouTube Music allow you to download songs for "offline listening" within their apps. This is ideal for saving data during commutes or flights, though you don't technically "own" the file outside of the app.