Data and insights drawn from over 30,000 songs in the TheoryTab database

Chords in Major Keys

The most popular chords in Major keys

Common Chords In C Major

Popular Keys by Scale

The most popular keys by scale

The most popular Major keys
The most popular Minor keys
The most popular Mixolydian keys
The most popular Dorian keys


Chord progressions used in the top songs of each decade



Chord analyses of all of the tracks in an album

Think Later - Tate McRae
Midnights - Taylor Swift
Dawn FM - The Weeknd
Solar Power - Lorde
Red - Taylor Swift
Star-crossed - Kacey Musgraves
Happier Than Ever - Billie Eilish
30 - Adele
Sour - Olivia Rodrigo
Good Riddance - Gracie Abrams
Gettin' Old - Luke Combs
Everything to Everyone — Reneé Rapp
Subtract - Ed Sheeran
Lil Nas X - Montero

Chord and Melody Metrics

Now and Then - The Beatles
Miley Cyrus - Used To Be Young
Vampire - Olivia Rodrigo
Dua Lipa - Dance The Night
What Was I Made For? - Billie Eilish
Noah Kahan - Stick Season
Complexity Between Olivia Rodrigo’s Albums
Complexity of Vault Songs From Speak Now (Taylor’s Version)