Voice Leading
The same chords can lurch or glide depending on how you connect them. Voice leading is the craft of moving each note (each "voice") the smallest possible distance from one chord to the next. It's the single biggest thing separating amateur and professional-sounding chord playing.
The Core Idea: least motion wins
Two rules do almost all the work: keep common tones (notes shared by both chords stay put) and move every other voice by the smallest step. In practice that means using inversions instead of always playing root-position chords. Below, the same progression is voiced two ways — hear the difference.
Key
Progression
Block chords (root position)
Every chord in root position. The top voice leaps around — serviceable, but bumpy.
Voice-led (smooth)
The same chords, using inversions so each voice moves as little as possible. Notice how little the notes change between chords.
The rules of thumb
If a note is in both chords, don't move it. C is in both C and Am — leave it where it is.
The voices that must move should step to the nearest chord tone, not leap an octave. That's where inversions earn their keep.
In 7th-chord progressions the 7th of one chord falls a semitone to the 3rd of the next — the smoothest resolution there is.
Practise the shapes
Voice-leading lives in inversions — build and hear them in the Chord Visualizer, or revisit triads & inversions.