Music Theory articles

Articles

A 7th chord is a triad plus one note, and that note decides everything. Hear maj7, m7 and dominant 7 side by side, and get all three in every key.

An add9 chord keeps its third and stacks the 9th on top. Hear what add9 and madd9 do, why Cadd9 is everywhere, and get add9 in all twelve keys.

Sus chords swap the third for a 2nd or 4th. Hear what sus2 and sus4 each do, how they resolve, and get the sus chords in all twelve keys.

How to play piano chords online: build each shape on a virtual keyboard, highlight a scale to see which chords fit, and hear the whole chord.

Twelve sad chord progressions grouped by the kind of sad they create, each one playable in your browser, plus the theory behind why they work.

Three different tools all call themselves a chord finder. Here is which one you actually need, and how to look up any chord and hear it played.

Identify chords by ear with a repeatable five-step test: find the bass note, decide major or minor, then listen for a fourth note. Hear every step.

Discover the foundation of most music, Roman numeral representation, and how to create emotion with chord combinations.

A chord is two or more notes played together. Hear how triads, 7ths and major vs minor are built, and learn to read any chord name.