Chord Progression and Theory


Hooktheory.com

This site is a huge database of songs, their chords, and key signatures. You can see the chords being played by various songs, as well as the piano keys. You can also change the key signature of the songs to hear them differently.

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Dave Carlton analyzes 1300 songs

Carlton blogs for Hooktheory. He argues that the question, “Are some chords more commonly used than others?“ is an irrelevant question because a song's key signature will dictate what kinds of chords are in it. A song written in C# will have lots of C# chords in it.

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Pretty Picture

Pretty Picture

Geometry of Musical Chords

Dmitri Tymoczko, Princeton University

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