A free web source for theory lessons, exercises and tools. They also have apps for iOS and Android for purchase.
teoria.com is a web site dedicated to the study and practice of music theory. teoria.com has been developed by José Rodríguez Alvira as a complement for his courses at the Conservatory of Music of Puerto Rico.
Exercises and tutorials are part of the first and second edition of the book From Sound To Symbols by Micheal Houlahan and Philip Tacka published by Oxford University Press as well as the book Stradivari by Salvatore Accardo, Luigi Fiorentini, Gabriele Giacomelli and Paola Lenzi published in Italy by Bompiani.
The site is divided into four sections: tutorials, exercises, reference, and articles.
SchenkerGUIDE.com is a companion website to Tom Pankhurt's book ShenkerGUIDE: A Brief Handbook and Website for Shenkerian Analysis. The website includes resources for both students and instructors:
Teaching resources, including Powerpoints and worksheet require registration.
A downloaded program that has limited access with a free download and a much broader access with paid versions across multiple platforms.
The downloadable free version includes 4 beginner modules, interval and chord identification exercises, and 21 lessons.
Online free content consists of Interval song chart generator and a 6 chapter music theory course.
Available for Windows, Mac, and iOS.