Ricci Addams came up with the idea for this site during his senior year of high school, and shortly thereafter Musictheory.net became a reality. A real find for any music student (and for those who would just like to learn a bit about music), Musictheory.net contains over 30 interactive lessons on such topics as the triad inversion, major scales, key changes, and diatonic seventh chords. There are also a number of helpful trainers here as well, including an interval and brass trainer, among others. The site also contains a chord calculator and a staff paper generator. Additionally, visitors can elect to download the entire website for offline viewing. Finally, the entire site is also available in British English for the convenience of those persons residing in the United Kingdom.