Teach Yourself Music Theory – 32.) Building Triads from Scales

Continuing with our topic of triads, we are going to be discussing what and which triads are built from scales… covering major, natural, harmonic, and melodic minor.

Beside the lead-sheet note note names, the Roman numeral figured-bass and triad quality remains the same from each respective scale regardless of starting pitch.

Let’s start with the major scale:

Building triads on each note, we get what we have above. 3 major triads, 3 minor triads, and 1 diminished triad. Chords I , IV , and V will always be major in a major key.

Now, natural minor:

We have the same amount of major, minor, and diminished triads… but they are in a different order.

As for harmonic minor:

With the inclusion of the raised leading tone, we see a quality of the chords change. Instead of v being minor, V is major in harmonic minor. Also, we have two diminished chords.

Finally, melodic minor:

With two raised pitches, we get another completely different group of triads. Now, the ii chord is minor… but the vio chord is diminished.

NOTE: the “B” symbol in the pictures means “flat” just like the “b” sign.

Thank you so much for taking the time to read! Feel free to comment, share, and subscribe for more daily tips below! Till next time.

Author: Bryan M. Waring

Bryan Waring is a graduate of USM's School of Music with a B.M. in Performance – Composition and is now attending Belmont University for a M.M. in Commercial Media – Composition & Arranging. During his time at USM, he studied violin with Dino Liva and composition with Dr. Daniel Sonenberg, as well as has premiered several pieces during the semiannual Composer's Ensemble concert series. In 2017, Bryan was a writer for the original musical theater work of "Molded By The Flow," directed by Paul Dresher and Rinde Eckert. Outside of school, Bryan has been involved with writing music for videogame developers at Portland's CI2 Lab, collaborating with the King Tide Party, and studying with Larry Groupé (Straw Dogs) in San Diego. Now living in Nashville. Along with composing, Bryan teaches music to children, receiving the Master Teacher Award for his work at ESF Camps; and does audio engineering for live ensembles. Besides talents in music, Bryan is a team-player in any competitive work environment; equipped with skills in leadership, organization, mathematics, creativity, communication, and managing. On the side, Bryan has worked as a model for several skilled artists in the New England area. Among his other accomplishments include obtaining the rank of Eagle Scout in April 2013 with a project of building a side parking area with guide rails for Webb Mountain Park in Monroe, CT.

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