[cnanders]

co-founder of Hooktheory here. When this article was published (2012), it was based on the first 1300 songs in the library [https://www.hooktheory.com/theorytab]. At that time, the two most common chords after E minor for songs in the key of C major were F major (59% of the time) and A minor (34% of the time). The library now has about 12k songs and the percentages have changed. Still the same two chords, but now F major (IV) is only about 34% of the time, and A minor (vi) is about 24% of the time. Here is an updated plot of the most common chords after E minor for songs in the key of C major https://imgur.com/a/lBfVK0X?

[mpalmer]

I was responding more to what I saw as the rather blunt application of statistics to the songwriting process. Admittedly I'm new to your site, but I'm curious about the theory.

[Balgair]

I'm not totally familiar with the data set, but it would be nice to plot more things from it. For instance, what were the chords that were popular during certain years? You mention that the chords have changed, what does that graph look like? Is there any correlation between, I dunno, the DJIA's derivative and the 'sounds' of popular music.

Great work though! I really like the clear and informative data displays.

[tareqak]

Someone should add (2012) to the submission title.

[ScottBurson]

Hmm, my search for "Kodachrome" came up empty. I'm guessing "Tallis Fantasia" won't work either :-)