The larger structures of tonal music have at its core a much simpler and more basic harmonic skeleton. Musical example is transition harmony of first movement of Beethoven’s 6th.

Modulations are central to the art of tonal music. This article can get you started.

Key relations are among the most powerful means of expression in music.

Whether you're a songwriter, a classical musician, or an electronic musician, studying the chorales of Bach will develop your harmonic creativity towards mastery.

On the origins of the musical cadence, and a reference guide to composing with them.

Build beautiful chord progressions, and then sing them.

After intervals, chords are the next-level building block of musical organization. This article shows how I think about chords and their progressions, and teaches you fundamentals for composing with them.

A highly useful technique for using the 12 tones.

Intervals are units of music that happen on the smallest level.

When it comes to rediscovering music, sometimes it is beneficial to think outside of the box.

The laws of physics and acoustics will definitely interest a musician studying theory and harmony. Closely investigating the phenomena is how we will come to learn about the possibilities of sound, and ultimately find the roots of music in the laws of nature.