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.

Not only is the chord played in a different position, but the note order is changed around. This results in different sounds from the chords as different notes are emphasized. It's also used in soloing, but that's at a later stage and is somewhat 'Jazzy' in approach.

Reviving Chord Sequences: Voicings, Inversions & Transitions

Using single note to create harmonic variation on given harmony.

Chord melody solo in C minor. This lesson covers closed open and inversion chords. Finger style used throughout the piece.

Using I-VI-II-V progression with pivot notes.

8 variations of power chords, that have been used in rock and metal music for years.

Practical example to visualize various chord shapes and triads/quad-triads inversions on the fretboard!

A melody over a simple harmony. The first of several lessons of how to make chord melody arrangements.