Welcome to the "DG Scales and Chords" website!

This site uses the following technologies:

  • The Jekyll software framework was used to generate the site's pages and structure;
  • The interactive menus and tabs are part of the jQuery UI framework;
  • All the research on Scales, and Chords, including the data pages of this website, were done using the Ruby programming language.
  • This site includes more than 530 HTML pages and more than 12,720 SVG images.

The content of this website will soon be available in the form of printed books, for those interested in musical scales, who want to keep a paper-based copy at hand.

Diego is the author of "Ruby Facil", a book teaching Ruby programming in Spanish; the book is currently in its 3rd Edition (since 2013).

Diego is also the author of 17 interactive Android applications that explore chords and scales for various musical instruments. You can find these applications at: https://sites.google.com/site/dgandroidapplications/.

This website was created by Diego F Guillen Nakamura. Diego is a software engineer with more than 30 years of professional experience. He has been programming in numerous languages, including COBOL, Pascal, Prolog, Lisp, C/C++, Pascal, VB, SQL, and more recently with Perl, Python, Ruby, Java, and, HTML/CSS/SVG.

One of Diego's hobbies is playing Latin-American music on keyboard and guitar.

In this opportunity, Diego puts together two of his passions, programming and music, to explore musical scales and chords.


Enjoy your visit!