The label-backed organization partly credits the boost to the rise of new entrants like Apple Music and Tidal. Streaming was simply the hot space last year, and everyone stood to gain whether they were fresh or an incumbent like Spotify. Internet radio (think Pandora and SiriusXM) and music videos also played roles, but only tiny ones. No matter what, online tunes were enough to offset the drop in demand for hard copies, as the entire industry's revenue grew a modest 0.9 percent.

It's hard to say that streaming will keep growing at the pace it has, since there are only so many people willing to either subscribe or put up with ads. Even so, the data might be enough to have labels changing how they distribute and push music. Rather than treat streaming as just one of multiple options, they may be more likely to steer you toward the on-demand services first and foremost.