3 links have been added on this idea.
  1. Shazzam lets you connect to your facebook friends, but yeah, not quite nailed it as a network of likeminded music fans. Some other options exist though, here https://www.lifewire.com/best-social-music-sites-2438411

  2. Good idea, Spotify just doesn’t do this, and youtube is a list of hate comments, nothing I have found lets you share music with others into the same genre. Any ideas anyone?