Hi! We usually add new genres if they have external identifiers or at least external url's describing the subject and its notability, which is required by Wikidata policy: WD:N. If you want to keep Drum and bass electronic rock (Q124791567), it is worth adding some articles detailing the concept in described at URL (P973) or other external IDs confirming its notability, otherwise it have to be nominated for deletion. Thanks.
Prototyperspective
Joined 23 December 2019
Alright, makes sense. There are sources about it which I'll add, I just don't think they use this name but maybe I can find a source for that as well.
Yeah, the point is that the sources have to use exactly that term and describe the concept as a distinct genre/style.
What about changing it to something "Combination of drum and bass with rock" or something like that? Or is there another way fusions/hybrids are being dealt with here?
Nope, that won't work as it would violate Wikidata:Verifiability. We only create items for concepts that are established in the sources, and until then we have to use a combination of two separate items for every artist/release.
Okay, so if the sources don't use a specific term but only the concept and find it to be a distinct genre, then it can't be here as a new item.
So it can be deleted, I try to keep it in mind so that I'll revisit this if there ever are a few sources using a specific name for it.
Now the question still remains if there is some way that combinations can be explored / used via Wikidata – I guess one way would be SPARQL queries that list all musicians with both the genre drum and bass and rock (or any of either subgenres) set...is there any other?
Probably not, SPARQL is the only way to do it.
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