How Stuff Works ⚙️ on Instagram: "The Axis of Awesome’s “4 Chords” song is a comedic yet eye-opening performance that highlights how many of the world’s biggest pop hits are built on the same four-chord progression. Using the chords I–V–vi–IV (in the key of E: E–B–C# minor–A), the Australian musical comedy trio seamlessly weaves together dozens of songs—from Journey’s “Don’t Stop Believin’” and Lady Gaga’s “Poker Face” to U2’s “With or Without You” and Jason Mraz’s “I’m Yours.” The mashup is bot

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