This image helps to get the ideas flowing for songwriting. It shows the various chords (triads) with a C note. Like a heat map, it highlights all the locations across harmonic space that include this pitch.

And what's cool is that, as you play different progressions built from these chords, they tend to sound good. This is due to their shared link with the C note.
You'll see (and hear) what I mean as you play around with these chords.

A song might not be built entirely from these chords alone -- they might simply serve as a springboard for more ideas. Or maybe you can come up with a full tune from these harmonies....
And on a more esoteric note ... it's interesting how this version of the ChordMap resembles the Mayan calendar, yeah? With its colorful symbols and concentric rings, it's structure is strangely similar.

The Aztec sun god, Tonatiuh, sits at the center of the Mayan calendar. Like Apollo, the Greek god of the sun (and music), he plays a central role in the progression of time. Music is the audible convergence of time and space (pitch and rhythm). And it all flows in a cycle.
As they say, everything is connected. :)



