I also make use of “song radio”, i.e. auto-generate a playlist based on a single song. I might call your method “playlist radio”, and I don’t use it as often.

I also make use of “song radio”, i.e. auto-generate a playlist based on a single song. I might call your method “playlist radio”, and I don’t use it as often. However, judging by how many songs on these recommender radios that I’ve already liked, I think that recommendations are somehow always based on a vector.