A huge amount of internet modelling and sampling would improve at scale if we knew this. I've discussed this with researchers in the field. Akamai and Google and Facebook have private information which is their secret sauce.
* Lastfm has an API but it's not great and an API is different to a dataset. I want to have the data available in my own DB, not have to make requests for whatever I might need.
* You can't get youtube links from the lastfm API, you have to crawl the tracks pages.
* The tags on lastfm are a folksonomy not a fixed taxonomy like musicbrainz
I have used [music-map](https://www.music-map.com/) and last.fm together to make a [playlist generator](http://playlist.hallofbrightcarvings.com.au) but I'd like to be able to do the same kind of thing without having to crawl third party sites. I'd also like to know that there was a music database of listenable music that was kept up to date.