New Music Friday: Katy Perry at the top, Afrojack and David Guetta at the bottom, various songs in between

Song of the week:
Katy Perry feat Migos 'Bon Appétit'
With the world's social and political problems now solved purposeful pop takes a back seat on the new Katy single. 'Bon Appétit' (or 'Ciao Adios', as Anne-Marie sang it) is a strange single: when the chorus properly gets going (at 2:16) you've got a really interesting electronic pop single that definitely puts 'Bon Appétit' in Song Of The Week territory, but it's a frustrating listen: the song takes too long to get to the big reveal and it loses momentum every time Migos pop up. Strange that there wasn't the confidence to launch the single with a 100%-Pezza version before dropping the Migos remix four weeks later, if indeed at all.

Wrong of the week:
Afrojack, David Guetta and Ester Dean 'Another Life'
This week's playlist is fury-inducing, should-know-better nonsense from Kygo down but this effort really takes the shit-covered biscuit. Remember: there was a point in the studio where at least one person said: "Yes. This is good enough to release. Our work here is done."

Additional notes:

The new, Louisa Johnson-abetted version of AJR's 'Weak' actually works really well.
Blenda's 'Chill' is probably the nicest surprise of the week, but Fall Out Boy get a gold star for referencing Britney and chucking in a big "HEY!" on their new song.
You know you're in trouble when OneRepublic have Gone Tropical.
Rebecca & Fiona and Dolores Haze have both released better Charli XCX songs than the new Charli XCX song.
Good news Men Of A Certain Age: you get a Gorillaz album AND a Phoenix single today.
Something solid to cling to in a world gone mad: Aston Merrygold is still going.
Similarly if you were worried that seven days might have passed without new music from Dua Lipa, fear not: she's guesting on a Wale, Major Lazer and WizKid song.