I mean, you could decide to go through liner notes like ingredients lists to make sure nobody snuck in any high fructose Shelly Peiken or whatever, but then you find out you’ve also got to watch out for glucose-fructose Sia, and oh wait, studies show Diplo’s now sold out, and it all gets rather out of control and pointless. People need to get paid. Career shifts happen. David Frank was half of The System. Greg Kurstin was half of The Bird and the Bee. Bonnie McKee is essentially 2012’s Lauren Christy. Max Martin once fronted a terrible rock band. It’s all fascinating and improbable and morally neutral.