Chordata

ChorData. Beasts with strings. Get it, right? Okay, this is a dummy chordbook with a LOT of inversions for mandolin, ukulele and guitar using standard tuning. There's also drop-D for guitar as I grew up playing like that. You can also find a chord name by knowing notes you play.

Features

You can user either a simple webapp

or a CLI interface:

chordata.py -h

usage: chordata [-h] [-i {mando,uke,guitar,guitardd}] [-s] [-a]
                [-f MAX_FINGERS]
                chords [chords ...]

A dummy chordbook

positional arguments:
  chords

optional arguments:
  -h, --help            show this help message and exit
  -i {mando,uke,guitar,guitardd}, --instrument {mando,uke,guitar,guitardd}
                        instrument/tuning to show
  -s, --same-shapes     show chords w/ same shape
  -a, --all             show all chord inversions
  -f MAX_FINGERS, --max-fingers MAX_FINGERS
                        how many figers maximum you want to use


rchordata.py -h
usage: rchordata [-h] [-i {mando,uke,guitar,guitardd}] notes [notes ...]

Find chords by giving me notes

positional arguments:
  notes                 space separated notes: start from 1st string (E on
                        guitar). Use "0" for open string and "x" for not
                        played string.

optional arguments:
  -h, --help            show this help message and exit
  -i {mando,uke,guitar,guitardd}, --instrument {mando,uke,guitar,guitardd}
                        instrument/tuning to search

To get just some chords you need quick:

chordata.py c f g

=================[ C ]==================
    1   2   3   4   5   6
E |---|---|---|---|---|---|
A |---|---|-O-|---|---|---|
D |---|---|---|---|-O-|---|
G |---|---|---|---|-O-|---|



=================[ F ]==================
    1   2   3   4   5   6
E |---|---|---|---|-O-|---|
A |---|---|-O-|---|---|---|
D |---|---|-O-|---|---|---|
G X---|---|---|---|---|---|



=================[ G ]==================
    1   2   3   4
E |---|---|-O-|---|
A |---|-O-|---|---|
D |---|---|---|---|
G |---|---|---|---|

In case you need to see all the inversions:

chordata.py c --all --instrument uke

=================[ C ]==================
    2   3   4   5   6
A |---|-O-|---|---|---|
E |---|-O-|---|---|---|
C |---|---|-O-|---|---|
G |---|---|---|-O-|---|


    1   2   3   4   5   6   7   8
A |---|---|---|---|---|---|-O-|---|
E |---|---|-O-|---|---|---|---|---|
C |---|---|---|---|---|---|---|---|
G X---|---|---|---|---|---|---|---|


    1   2   3   4   5   6   7   8
A |---|---|---|---|---|---|-O-|---|
E |---|---|---|---|---|---|---|---|
C |---|---|---|---|---|---|-O-|---|
G |---|---|---|---|-O-|---|---|---|


... (more) ...

To see what other chords you can play with "this finger-pattern":

Does not always mean same strings. Also considers chords with open strings and barre equal.

chordata.py g7 --same-shape --instrument mando

=================[ G7 ]=================
    1   2   3
E |-O-|---|---|
A |---|-O-|---|
D |---|---|---|
G |---|---|---|

           w/ same shape:

           ~~~~~~~~~~~~[ C7 ]~~~~~~~~~~~~
              4   5   6   7   8
          E |---|---|-O-|---|---|
          A |---|---|---|-O-|---|
          D |---|-O-|---|---|---|
          G |---|-O-|---|---|---|


           ~~~~~~~~~~~[ C#7 ]~~~~~~~~~~~~
              5   6   7   8   9
          E |---|---|-O-|---|---|
          A |---|---|---|-O-|---|
          D |---|-O-|---|---|---|
          G |---|-O-|---|---|---|


           ~~~~~~~~~~~~[ D7 ]~~~~~~~~~~~~
              6   7   8   9   10
          E |---|---|-O-|---|---|
          A |---|---|---|-O-|---|
          D |---|-O-|---|---|---|
          G |---|-O-|---|---|---|

          ... (more) ...

Know a pattern, but have no idea what chord is it?

rchordata.py 1 2 3 4 --instrument mando

    1   2   3   4   5
E |---|---|---|-O-|---|
A |---|---|-O-|---|---|
D |---|-O-|---|---|---|
G |-O-|---|---|---|---|

Is known as: Caug/G#, Eaug/G#, G#aug

To lame? Specify how many max fingers you need for a G:

chordata g --instrument mando --max-fingers 2 --all

=================[ G ]==================
    1   2   3   4
E |---|---|-O-|---|
A |---|-O-|---|---|
D |---|---|---|---|
G |---|---|---|---|


    1   2   3   4   5   6   7   8
E |---|---|---|---|---|---|-O-|---|
A |---|---|---|---|-O-|---|---|---|
D |---|---|---|---|---|---|---|---|
G |---|---|---|---|---|---|---|---|


    1   2   3   4   5   6   7   8   9   10  11
E |---|---|---|---|---|---|-O-|---|---|---|---|
A |---|---|---|---|---|---|---|---|---|-O-|---|
D |---|---|---|---|---|---|---|---|---|---|---|
G |---|---|---|---|---|---|---|---|---|---|---|


    1   2   3
E X---|---|---|
A |---|-O-|---|
D |---|---|---|
G |---|---|---|



================[ G/d ]=================
    1   2   3   4
E |---|---|-O-|---|
A |---|-O-|---|---|
D |---|---|---|---|
G X---|---|---|---|

PLANNED FEATURES

• chord notes
• transpositions, progressions
• MIDI?