Led Zeppelin has notoriously been protective of the rights to its music and where it can be heard (the occassional Cadillac commercial notwithstanding), so when the entire discography became available on Spotify back in December of 2013, it was a pretty big deal. This week, it appears that Spotify's exclusivity deal expired, and as of yesterday, the entire Zeppelin discography can now be streamed from Rdio, Beats Music, Google Play Music, Xbox Music, Deezer, and more. Even the high bitrate service Tidal is offering the full set, marking the first time that Led Zeppelin's music has been available in lossless streaming.
With Plant, Page, and co. now widely available, perhaps we'll see other major streaming holdouts such as The Beatles, Metallica, and Prince make their tunes more widely accessible on the services where people are actually willing to pay to listen. But we're not holding our breath. Rock and roll.