Three notes, and which one you put at the bottom changes how it lands. It is an unglamorous move that smooths out progressions without changing a single chord.
The chord C is the notes C, E and G. Those three are a C in any order. But which one ends up at the bottom changes how the chord sits.
- CC — C at the bottom (most settled)
- C/EC/E — E at the bottom (lifts slightly)
- C/GC/G — G at the bottom (feels like it continues)
"C/E" is read "C over E" and means: the chord is C, but the bass note is E. It looks like a fraction; the top is the chord and the bottom is the lowest note.
The same chord with its notes reordered. Identical notes — only which one sits at the bottom is different.
A smooth bass makes a progression feel natural
Listen to just the lowest note of each chord and you will hear a melody in its own right. When that line moves in small steps instead of jumping around, the progression sounds natural.
- C, G, Am, F (bass: C → G → A → F)
C | G | Am | F
- C, G/B, Am, F (bass: C → B → A → F)
C | G/B | Am | F
In the second one the bass walks down one step at a time: C, B, A, F. The chords are unchanged, and yet it flows. This is standard practice in Canon-style progressions and ballads.
- Chords are stacked notes; three with one skipped between makes a triad.
- Lower the middle note by a semitone and it becomes minor.
- A key contains seven chords — six you will actually use.
- Roman numerals name positions in the key, so they survive a key change.
- Sevenths add colour; inversions tidy up the bass.
That closes part two. Part three is about the order you put chords in. Before that, write something over a progression with a smooth bass.
Generate over C, G/B, Am, FThe bottom note carries the weight. Inversions let you smooth out the bass line without touching the chords.