Those two problems are exactly what the curation of a record label provides. If I really like a song or album by Hudson Mohawke or Flying Lotus, then I know I

Those two problems are exactly what the curation of a record label provides. If I really like a song or album by Hudson Mohawke or Flying Lotus, then I know I can find similar releases from the Warp or Brainfeeder labels. This lets me explore similar artists that may not be as well known. I have experienced very high rates of success with this method, much better than any algorithmic recommendations.