To help you get started, we've collected the most common ways that music21 is being used within popular public projects.

cuthbertLab / music21 / music21 / musedata / base40.py View on Github

try:
        simpleIntervalName = base40IntervalTable[simpleDelta]
        simpleInterval = interval.Interval(simpleIntervalName)
    except KeyError:
        raise Base40Exception('Interval not handled by Base40 ' + str(simpleDelta))

    numOctaves = abs(delta) // 40

    sgi = simpleInterval.generic  # Simple generic interval
    # Compound generic interval
    cgi = interval.GenericInterval(direction * (sgi.value + 7 * numOctaves))
    sdi = simpleInterval.diatonic  # Simple diatonic interval

    newInterval = str(sdi.specifier) + str(cgi.value)

    return interval.Interval(newInterval)

View more ways to use music21

music21

music21 -- A Toolkit for Computer-Aided Musical Analysis and Computational Musicology

Copyright © 2006-2024 Michael Scott Asato Cuthbert

For more information, visit: https://www.music21.org/music21docs/

To try it out, visit: https://tinyurl.com/m21colab (runs music21 v7)

And to install, see: https://www.music21.org/music21docs/usersGuide/usersGuide_01_installing.html

Music21 runs on Python 3.10+. (Use version 4 on Python 2 or Py3.4, version 5 on Py3.5, version 6 on Py3.6, version 7 on Py3.7, version 8 on Py3.8/Py3.9.)

Released under the BSD (3-clause) license. See LICENSE. Externally provided software (including the MIT-licensed Lilypond/MusicXML test Suite) and music encoding in the corpus may have different licenses and/or copyrights. A no-corpus version of music21 is available also on GitHub for those needing strict BSD-license of all parts of the system.

Documentation

User's Guide

Module Documentation

Mailing list

See: https://groups.google.com/forum/#!forum/music21list

Contributing Guide

Contributing Guide

Community Code of Conduct

Music21 encourages contributions, discussions, and usage from all people interested in music and computers. This encouragement extends to all people regardless of (among other aspects) gender, race, sexual orientation, disability, religion, appearance, veteran status, gender identity, socioeconomic status, or nationality.

Members of the community will strive to be friendly, patient, and welcoming, especially of viewpoints and experiences different from our own. We reject harassment and contributions (in mail, comments, or code) that belittle individuals or groups of people.

We ask all members of the community to be mindful particularly about assumptions of the gender of users (choice of pronouns in comments and code). We recognize that members sometimes make mistakes and will, in general, accept sincere regrets for such cases. Blatant or repeated violations of the code will result in the removal of the contributor’s participation in the community.

The maintainers of music21 and associated sites will commit themselves to enforcing this code of conduct. Users who notice violations, including instances of abuse, harassment, or otherwise unacceptable behavior are requested to contact michael.asato.cuthbert@gmail.com. Maintainers will respect confidentiality with regard to reports.

Acknowledgements

The early development of music21 was supported by the generosity of the Seaver Institute and the National Endowment for the Humanities, along with MIT's Music and Theater Arts Section and the School of Humanities, Arts, and Social Sciences.