Part two of…the Song Machine! We track pop music’s muddled fallout from 9/11 (again), the reign of Max Martin and Dr. Luke, track-and-hook songwriting, Rihanna, Katy Perry, Kesha and the f u t u r e of pop.

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Songs in order:

Kelly Clarkson - A Moment Like This

Yeah Yeah Yeahs - Maps

Kelly Clarkson - Since U Been Gone

Ted Leo - Since U Been Gone/Maps

Rihanna - SOS

Rihanna - Umbrella

Rihanna - What’s My Name

Beyonce - Halo

Kelly Clarkson - Already Gone

Katy Perry - I Kissed a Girl

Flo Rida (FT KESHA) - Right Round

Kesha - Tik Tok

Kesha - Raising Hell

Juice WRLD x Marshmello - Come & Go