– Cross reference artists, albums, and tracks in Discogs, Musicbrainz and Wikipedia, so that an entry in each one is linked to the corresponding entry in the others.
– Finish the genre graph implied in DBPedia. Extract the graph and QA it as a whole. Enable multiple distinct genre graphs, so that multiple cultures are supported. Create graphs for non-EU/US cultures, e.g. for use in China.
– Cross reference Encyclopaedia Metallum with Discogs, Musicbrainz and Wikipedia.