I would do that, Spotify is good but doesn't have every track by every major artist. Either the latest or their past well-known stuff. Very limited.
My itunes has The Damned, Killing Joke, Jay-Z, Cypress Hill, Danzig, Rollins Band, Emperor, Immortal and Korn to name but a few. I'm a metalhead with a sensitive side hahaha (hence the Gary Numan).