“All pop music sounds the same!” you might have once yelled while shaking your fist at a cloud. Patrick Metzger at The Patterning suggests that your aging ears might not be deceiving you after all, in a piece called “The Millennial Whoop: A Glorious Obsession With The Melodic Alternation Between The Fifth And The Third.” The “fifth and third” refers to the notes on a major scale—so in C-major, e.g., G and E. Metzger calls that repeated alternating between the fifth and third the “millennial whoop,” though it seems unfair to pin this on an entire generation, given that it’s been a part of popular music since such a thing existed (as have, in one form or another, the “whoa-oh” sound that characterizes the so-called whoop). Quartz put together a video of contemporary hits that feature that particular progression, and between Metzger’s blog readers and Quartz, dozens of songs have been identified, from Katy Perry’s “California Gurls” to Kings Of Leon’s “Use Somebody” to Fall Out Boy’s “She’s My Winona.”