Seventh Chords Explained: maj7, m7 and 7 for Warmer Beats
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You play a simple chord progression and it sounds fine, but also a little bare. Then you hear an R&B or lo-fi beat where the same kind of chords suddenly sound warm, soft and a bit melancholic. Chances are there are seventh chords in there.
In this article you will learn what a seventh chord is, the difference between maj7, m7, 7 and m7♭5, and how to put them in your piano roll in a few clicks. With charts you can play along with right away, no sheet music reading required.
The short answer
A seventh chord is a regular three-note chord (a triad) with a fourth note stacked on top: the seventh. That is the seventh note counted up from the root. The extra note gives the chord more color. Depending on the type of chord and which seventh you use, it sounds dreamy, soft, bluesy or tense.
There are four types you will run into most as a producer:
- maj7 (major seventh): dreamy and open
- m7 (minor seventh): soft and warm
- 7 (dominant seventh): bluesy, wants to go somewhere
- m7♭5 (half-diminished): dark and restless
Major and minor sevenths: the only thing you need to remember
There are two kinds of sevenths. If you count half steps up from the root in your piano roll (every key, white or black, is one half step), you will see the difference right away:
- Major seventh: 11 half steps above the root. That is exactly one key below the octave. For C, that is B.
- Minor seventh: 10 half steps above the root. That is two keys below the octave. For C, that is B♭.
Combine that seventh with a major or minor triad and you get the different types of seventh chords. Not quite sure what a major and minor triad is? Read the difference between major and minor first.
The four seventh chords side by side
Everything below uses C as the root, so you can compare them easily. The numbers are half steps up from the root.
| Chord | Built from | Half steps | Notes | Sound |
|---|---|---|---|---|
| Cmaj7 | major triad + major seventh | 0, 4, 7, 11 | C, E, G, B | dreamy, open |
| Cm7 | minor triad + minor seventh | 0, 3, 7, 10 | C, E♭, G, B♭ | soft, warm |
| C7 | major triad + minor seventh | 0, 4, 7, 10 | C, E, G, B♭ | bluesy, tension |
| Cm7♭5 | diminished triad + minor seventh | 0, 3, 6, 10 | C, E♭, G♭, B♭ | dark, restless |
Pay attention to the difference between Cmaj7 and C7. They look alike, but they sound very different. The major seventh in Cmaj7 sounds soft and floaty. The minor seventh in C7 adds a bluesy tension, as if the chord is not done yet and wants to move on to the next one.
How they are written (and where you will see them)
In tutorials, songbooks and MIDI packs you will see different ways to write the same chord:
- maj7: also M7 or Δ7 (Cmaj7, CM7, CΔ7)
- m7: also min7 or -7 (Cm7, Cmin7, C-7)
- 7: just a 7 after the letter (C7). This is always the dominant seventh chord.
- m7♭5: also ø or ø7 (Cm7♭5, Cø)
The trap: C7 is not the same as Cmaj7. If it only says 7, it is the minor seventh.
Which seventh chords belong to your key?
You do not have to figure out by trial and error which seventh chords sound good. Take the chords of your key and add the seventh that is already in the scale to each one. You get this:
| Key | Seventh chords |
|---|---|
| C major | Cmaj7, Dm7, Em7, Fmaj7, G7, Am7, Bm7♭5 |
| A minor | Am7, Bm7♭5, Cmaj7, Dm7, Em7, Fmaj7, G7 |
The pattern is the same in every major key: maj7, m7, m7, maj7, 7, m7, m7♭5. Want a different key? Just shift everything in your piano roll by the same number of half steps. Which triads belong to each key, you can see in which chords go together.
Handy tip for minor keys: you can swap Em7 for E7 (with a G♯ instead of G). That chord comes from the harmonic minor scale and pulls back to Am extra hard. Try it at the end of your loop.
From triad to seventh chord: an example
Take Am, F, C, G, a progression you hear a lot in melodic rap and trap. Add a seventh to every chord and you instantly hear a warmer, softer version of the same loop:
| Triad | Seventh chord | Notes | What gets added? |
|---|---|---|---|
| Am | Am7 | A, C, E, G | G |
| F | Fmaj7 | F, A, C, E | E |
| C | Cmaj7 | C, E, G, B | B |
| G | G7 | G, B, D, F | F |
Too sweet for your taste? You do not have to put a seventh on everything. Often it is enough to enrich just the first two chords (Am7 and Fmaj7) and leave the rest as plain triads.
The classic: ii, V, I
Dm7, G7, Cmaj7 might be the best-known seventh chord progression in jazz, and you hear it in soul, R&B and neo soul too. The m7 chord gets things moving, the dominant 7 chord builds tension and the maj7 chord lets everything land. Play it a few times in a row and you will get it right away.
How to put seventh chords in your piano roll
It works the same in every DAW, whether you use FL Studio, Logic Pro, Ableton or GarageBand.
- Lay down your triads first. Click them in yourself or start with the MIDI from the free Chord Progression Generator.
- Find the root of each chord. That is the bottom note when the chord is in root position.
- Count up 10 or 11 half steps. Check the chart above to see which seventh belongs to that chord. Not sure? Use the note from your scale that sits there.
- Listen to whether the seventh is too loud. Lower the velocity of that note a bit if needed, so it adds color instead of grabbing attention.
- Smooth out the transitions. With four notes per chord your hand jumps around more. Use chord inversions so the notes flow into each other.
Two tricks to build them faster
A maj7 is a minor chord over a different bass note. Cmaj7 is C, E, G, B. Take away the C and you are left with E, G, B: an E minor chord. So if you put an Em chord over a C in your bass or 808, you hear a Cmaj7.
An m7 is a major chord over a different bass note. Am7 is A, C, E, G. Without the A, that is C, E, G: a C major chord. So a C chord over an A in the bass sounds like Am7. Handy when your 808 already plays a fixed bass line.
Make them sound good in your beat
- Let your 808 play the root. The seventh belongs in the chords on top, not in the bass. That keeps your low end tight.
- Do not play too low. Four notes close together in the low register get muddy fast. Is your chord sitting right above your 808? Move it up an octave.
- Feel free to drop the fifth. In a seventh chord, the root, the third and the seventh define the sound. The fifth (G in a C chord) adds little. Leave it out and your chord instantly sounds lighter. Keys players call this a shell voicing.
- Watch out for the major seventh right next to the root. In an inversion, the B can end up directly below the C. That half step creates friction. Sometimes beautiful, but do it on purpose.
- Pick a soft sound. Seventh chords shine on Rhodes, warm pianos, pads and mellow guitars. On a sharp lead or bell they can sound cluttered.
Get started faster
Do not feel like counting everything out yourself? In the free Chord Progression Generator, pick the Chill or R&B mood: those use seventh chords for a warmer sound. Choose your key and tempo, listen, and download the MIDI with the chords plus a bass line on the root notes. Working on an existing beat or sample? Find the key first with Beat Lab.
Need more examples? In R&B chord progressions, lo-fi chord progressions and neo soul chord progressions you will find complete loops with seventh chords. And if you are a rapper or singer who would rather start writing right away, check out our beats.
FAQ
What is the difference between maj7 and 7?
With maj7 you add a major seventh to a major chord (11 half steps above the root). With 7 you add a minor seventh to a major chord (10 half steps). Maj7 sounds dreamy and calm, 7 sounds bluesy and wants to move to the next chord.
Why is it called a seventh?
Because it is the seventh note of the scale, counted from the root of the chord. For C you count C, D, E, F, G, A, B: the seventh is B.
Do seventh chords work in trap and drill?
They can, but they sound fairly soft and warm by nature. In dark trap and drill you hear plain minor chords more often. An m7 usually still works well, a maj7 can quickly sound too sweet. Try it and let your ears decide.
Do I need a seventh on every chord?
No. One or two seventh chords in your loop is often enough for more color. A seventh on everything can actually sound busy and vague.
How can I tell which chords are in a sample?
Start with the key. You can find it with Beat Lab. Then you know which seventh chords make sense, using the chart in this article.
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