Kyle Drake of Neocities has built a Pandora-like streaming player for the Myspace Dragon Hoard. The player is called Mydora and allows you to shuffle the entire collection or filter by genre.
In a thread of tweets, Kyle notes that he happened to conduct his own crawl of Myspace Music around the same time the Dragon Hoard was created, but instead of pulling audio files, he grabbed a large collection of metadata including name, location, views, plays, hits, last update, and genre (counts here).
It turns out that I just happened to conduct a full crawl of Myspace Music artists around 2009: name, location, fans, views, plays, hits, last update, GENRES. It fits the Hoard database (2008-2010) like a glove: after merging, only 32 artists are missing location info (0.0003%).
In 2009, Myspace Music had approximately 4.5 million artists. The Dragon Hoard contains 119,951 unique artists, so I believe it represents approx. 3% of the artists on Myspace in 2009. I have no info on total # of songs, but likely in the tens of millions (now lost forever).
This data fit the newly released database of tracks almost perfectly, allowing Kyle to create his player. he plans to tweak the interface in the future. The source code for the project can be found on GitHub.