I would not call myself clever lol. My first rugby coach explained to me that there are those who play the piano, and those who move them. I was placed with the latter and given a spot in the pack. I use Audirvana and do not make purchases. I use the favorites feature to save a selection of an artist or group that I enjoy then from there audit all of there work and then click on "similar artists" Sometimes I will select more to save or add to one of my custom playlists. There is also a website called "Music Map" which will group a large number of artists together based on similarities. I do not build a logical directory, I create a playlist of style/genre and then go from there. I especially like the "appears on" listings which indicate collaborations and that will send me off in another direction. Red pill or Blue pill....its the matrix.