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Python library to generate guitar tabs from MIDI files

Python library to generate guitar tabs from MIDI files

Tayuya

Python library to generate guitar tabs from MIDI files.

Installation

pip install tayuya

Usage

In [1]: from tayuya import MIDIParser

In [2]: mid = MIDIParser('sample.mid', track=0)

In [3]: mid.render_tabs()
Out[3]:
E-------------14--------------------------16--14----------14--------------
A-------------------------------------------------17--17------16--17--16--
D-16------16------16--16--16--16------16----------------------------------
G-----18--------------------------18--------------------------------------
B-------------------------------------------------------------------------
E-------------------------------------------------------------------------

Don't forget to set the track argument with the appropriate track number desired.

Get track numbers of all the tracks in the MIDI file


In [1]: from tayuya import MIDIParser

In [2]: mid = MIDIParser('sample.mid', track=0)

In [3]: mid.get_tracks()
Out[3]:
{0: 'Lead Guitar',
 1: 'Rhthym Guitar Dist',
 2: 'Acoustic Guitar',
 3: 'Rhthym Guitar Clean & Dist',
 4: 'Lead Guitar Fill',
 5: 'Guitar Harmonics',

Advanced

MIDI

Get all notes played in the MIDI track

In [1]: mid = MIDIParser('sample.mid', track=0)

In [2]: mid.notes_played()
Out[2]:
[{'note': 'C#5', 'time': 18},
 {'note': 'C#5', 'time': 30},
 {'note': 'B4', 'time': 26},
 {'note': 'C5', 'time': 0},
 {'note': 'C5', 'time': 28},
 {'note': 'C#5', 'time': 28},
 {'note': 'C#5', 'time': 30}]

Get key of the track

In [1]: mid = MIDIParser('sample.mid', track=0)

In [2]: mid.get_key()

Tabs

Get all notes to play

You can use this example to generate all the notes to play with their string
and fret positions.

In [1]: mid = MIDIParser('sample.mid', track=0)

In [2]: tabs = Tabs(notes=mid.notes_played(), key=mid.get_key())

In [3]: tabs.generate_notes(tabs.find_start())
Out[3]:
[('C#3', 5, 4),
 ('G#3', 4, 6),
 ('C#4', 3, 6),
 ('F4', 2, 6),
 ('B2', 6, 7),
 ('D#3', 5, 6),
 ('F#3', 4, 4),
 ('B3', 3, 4),
 ('D#4', 3, 8),
 ('F#2', 6, 2)]

Each tuple here is (note, string, fret)

How it works?

Here's a brief of how it works:

  • Fetch a track from the MIDI file
  • Find all the notes played and convert from MIDI code values to music notes
  • Find a scale for the set of notes extracted
  • Find the best position to play the extracted notes using the scale detected

Limitations

  • Works only for guitar solos. Implementation for determination and rendering of
    chords is not done yet.
  • Works only for standard tuning (E A D G B E)

TODO

  • [ ] Render tabs using Lilypond or some GUI alternative
  • [ ] Implement logic to determine and render chords
  • [ ] Better the scale detection implementation
  • [ ] Transposing
  • [ ] Add way to handle non standard tuning
  • [ ] More stringed instruments

GitHub