>the author exposes themselves as a filthy casual anyway by focusing on the work itself, as if Spotify were looking up a score

Isn't it the job of a DJ to pick a good recording? Petzold's test seems reasonable to me. As a classical listener, if I want a specific recording I'll just play that recording. The main function of the DJ is music discovery. Perhaps they know of good recordings I haven't already heard.

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xvector an hour ago | parent [-]

When was the last time you heard of a DJ doing classical?

	▲	mrob an hour ago \| parent [-]
		I haven't listened to radio for over a decade, but back when I did I listened to BBC Radio 3, where the DJ played classical. "DJ" does not necessarily mean somebody beatmixing dance music in a club. Spotify's "AI DJ" is obviously meant to simulate a radio DJ.