And -my- guess
I'll guess that music is either "full price" or "discounted", and an automatic mechanism un-discounts a title when a lot of people are buying it, since apparently something happened. And then something like this ensues.
I don't think they'd be cross-referencing with Google News, though; surely Twitter? Oh, and with some kind of algorithm - which will now be tweaked - to distinguish between "Music is on soundtrack of breakout film" and "Artiste arrested on child pornography charge or something", with Paul Gadd being one conspicuous example.
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