You might find this interesting. https://en.wikipedia.org/wiki/Musical.ly https://en.wikipedia.org/wiki/Musical.ly > Musical.ly Inc. was founded by long time

You might find this interesting. https://en.wikipedia.org/wiki/Musical.ly https://en.wikipedia.org/wiki/Musical.ly > Musical.ly Inc. was founded by long time friends Alex Zhu and Luyu Yang in Shanghai, China.[7][8] Before launching Musical.ly, Zhu and Yang teamed up to build an education social network app, through which users could both teach and learn different subjects through short-form videos (3–5 minutes long).