YouTube's subscription music streaming service lags far behind its biggest competitors

YouTube may be the king of online video, but its subscription music streaming service is trailing far behind its biggest competitors.  
According to a report in Bloomberg, Google now has 15 million paid subscribers — a number that includes customers on free trials, per sources  — across its two paid music streaming services, YouTube Music and Google Play Music. (The search giant has not made their subscriber base public; the number comes from two sources familiar with