Musical.ly did? How did they negotiate that license, I wonder? Let me put it another way then: Is the success of musical.ly and its successor TikTok really abo

Musical.ly did? How did they negotiate that license, I wonder? Let me put it another way then: Is the success of musical.ly and its successor TikTok really about somehow getting licensed music on a platform out the gate? And the sorting hat is just a good refinement that wouldn't have a chance to exist without the licensing?