The 7th chord is basically like a normal chord (root, third, fifth), but with the 7th note added. They are mainly used in jazz, but other musical genres can also get a nice flavor adding them in song progressions here and there.

Spice Up Your Chords: Unlocking Richer Sounds with 7ths!

Create modern sounding chord voicings by using the minor pentatonic scale

Open/spread voicings on guitar. Create open and expansive chord voicings and fuel your creativity.

I start with the simple chord shapes, and then I use the same chords in different variations/voicings. Sometimes I add the 7 4 2 degree so the piece always sounds like its developing, even though I'm using the same chords.

Major 7th voicings and the Major scale at the same time.

Learn one of my songs played on 7 string guitar.

Learn how to play sweep picking arpeggios and harmonize the G major scale.

The different boxes of the 7th arpeggio.