Last we heard, Spotify had some 40 million subscribers. That was so 2016. Now the music streaming service has announced it's pushed past 50 million paying subscribers. Feel like helping the company celebrate? Well, you could start by listening to a certain song by Kool & The Gang. Soon enough, you could even stream it at a higher audio fidelity, too. Compared against Apple Music's reported (by CNBC) 20 million users, it shows just how far Apple has to go before taking on the current leader in the space.