Most of them have free tiers, but the experience improves if you subscribe and pay a monthly fee. What separates them today are the quality of music discovery-whether it's based on algorithms or human curation-the user experience on desktop and mobile apps, what devices you can use them with, and their sound quality. You shouldn't have much trouble finding your favorite artist on any of them. Nowadays, these services have similar catalogs, offering millions of songs and playlists, and they generally all release new albums at the same time. For example, Taylor Swift might have been on Apple Music but not on Spotify, and Tidal was originally weighted toward hip hop.
Music streaming services used to be largely defined by their song libraries.
