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xkcd #2896: Crossword Constructors
(imgs.xkcd.com)
A community for a webcomic of romance, sarcasm, math, and language.
I assume it's just an example of how to create new topical words since it's a lot easier to name an album than to get a word well-known enough to be eligible for the dictionary.
The artists all seem to be big names so I assume it's their popularity rather than any history of quirky album names that's decided the list.