Good advice.

However for some genres that approach won't work, since they are either too new, too niche, the genre-description says too little about the actual songs etc. If this is the case another tip is to go at it from the production/distribution/scene side. So you check music mixed by the same audio engineer, released on the same record label, made in the same city during the same time. This can get you surprisingly far.

There is no real shortcut to doing it yourself, part of appreciating that music is often also to understand the context within which it was made.