Printable Charts

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D — A — D — G — A — D

one string down · everything else unchanged

every string down a semitone · same shapes

the deepest of the open tunings

the open strings are already D major

the open strings are already G major

the first twelve chords · standard tuning G C E A

from the Challenger Deep to the summit of Everest · one scale, nothing compressed

from the first synapsid to us · 320 million years on one axis

when each group appeared · five hundred million years on one axis

fifteen formulas · every letter explained beneath it

the main branches — from comb jellies to chordates · who is actually related to whom