Open chords give you C, G, Am, Em. Useful, but you are playing with a limited vocabulary. Add 7ths and suspended shapes and you get color - the difference between a chord that sits still and one that moves somewhere. These are not advanced concepts. They are some of the easiest chord modifications on the guitar.
Most 7th chords on guitar involve removing a finger from a shape you already know. E7 is E minus one finger. Cmaj7 is C minus one finger. Start there before moving to the harder shapes.
Dominant 7th Chords
The dominant 7th creates tension. It pulls toward the chord a fourth above it - a motion so natural that blues, jazz, and country all built entire genres around it.
E7 is the easiest: just lift your ring finger off an open E chord.
E7
A7 and D7 are similarly simple shapes you can reach from their open chord positions.
A7D7
G7 is slightly more demanding - it uses four fingers instead of three. But it appears constantly in folk and blues as the chord that resolves to C.
G7
Major 7th Chords
Major 7th chords have a rich, open quality - neither tense nor ordinary. They work well in ballads, bossa nova, and anywhere you want a chord to shimmer rather than drive.
Cmaj7 is the easiest to demonstrate: play C, then lift your index finger. The open B string gives you the major 7th for free.
Cmaj7Gmaj7Fmaj7
Fmaj7 is a useful alternative when F feels too difficult - it removes the barre but keeps most of the sound. Two fingers, open strings.
Minor 7th Chords
Minor 7ths smooth out the minor chord's edge. Am7 sounds slightly less resolved than plain Am - it sits somewhere between tension and rest, which is exactly what soul, R&B, and jazz need it to do.
Am7Em7Dm7
Em7 is effortless - remove your middle finger from Em and you are there. Am7 and Dm7 require slightly different fingerings than their plain minor versions but are still straightforward open chord shapes.
Sus Chords
Suspended chords replace the third of the chord. Dsus4 to D is one of the most-used guitar moves in pop and rock. Play Dsus4 for two beats, resolve to D. That one motion appears in more songs than you can count.
Dsus4Asus4Gsus4
Asus4 is another classic - often strummed quickly before resolving to A, giving the chord a brief ringing quality before it settles.
Practice Exercise
Work through this short progression that uses three of the chord types from this lesson:
Am7 - D7 - Gmaj7 - Cmaj7
One chord per bar. Listen for the character of each chord: Am7 is smooth, D7 creates pull, Gmaj7 settles, Cmaj7 rests. This progression appears in jazz standards, folk ballads, and pop songs. It sounds complete on its own and transfers to multiple keys.
Questions and Answers
What is the difference between a 7th chord and a major 7th chord on guitar?
A dominant 7th chord (G7, D7) adds a note a whole step below the octave, creating tension that pulls toward the next chord. A major 7th chord (Gmaj7, Cmaj7) adds a note a half step below the octave, creating a richer, more settled sound. The word "major" in the chord name refers to the 7th interval, not the chord quality.
Is Fmaj7 a good substitute for F on guitar?
Fmaj7 works as an F substitute in many contexts, especially in folk, pop, and acoustic arrangements where the song stays in the key of C. It avoids the barre and uses two fingers on an open-string shape. It does not sound identical to F - the open high E string adds the major 7th - but in most song contexts the difference is subtle and the chord fits.
