Zeppelin might be the most famous case, but plenty of songwriters have borrowed these infamous chords.



• Understand how a descending bass line can change the flavor of a progression.

• Learn how to add chromatic elements to your songs.

• Develop a keener sense of song structure.

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From the 12-bar blues to a shuffle pattern to a IIm7–V7–I progression, many musical motifs get recycled and repurposed. It's accepted that these ideas are simply out there in the air for songwriters and composers to use, gratis, as musical building blocks from which to create new work. Right?

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