Inversions — same chord, different bass

What an inversion is

A triad has three notes: 1, 3, 5. Normally the 1 (root) is on the bottom. That’s called root position.

If you put the 3 on the bottom instead, you get first inversion (notated “C/E” — “C chord with E in the bass”).

If you put the 5 on the bottom, you get second inversion (“C/G”).

A 7th chord has one more inversion (“third inversion” with the 7 in the bass — written like “C7/B♭”).

Same notes, different feel

A root-position C is C E G — solid, finished. A first-inversion C is E G C — bright, off-balance, leaning forward. A second-inversion C is G C E — anchored on the 5, sometimes used as a “passing” chord on the way to another.

The chord function doesn’t change — it’s still “the I chord in C major”. But the bass motion between chords can become hugely smoother when you choose inversions cleverly.

A worked example — descending bass line

Compare these two progressions in C:

Without inversions:

C → Am → F → G → C bass: C → A → F → G → C (jumps around)

With inversions (a “C / B / Am / G / F …” bassline):

C → G/B → Am → C/G → F → C/E → Dm → G → C bass: C → B → A → G → F → E → D → G → C (stepwise descending — beautiful)

Same chord qualities, totally different feel. This is the trick behind countless ballads — “Streets of London”, “While My Guitar Gently Weeps”, “Imagine”.

Slash chord notation

When you see something like D/F♯, read it as “D major chord with F♯ in the bass”. The chord’s quality is decided by the part before the slash. The note after the slash is just the bass.

You’ll see slash chords constantly in modern pop and singer-songwriter charts. They’re not weird chords — they’re regular chords with a smarter bass note.

Guitar voicings for inversions

For C major triad inversions on strings 4-3-2:

Root pos:   3-2-1   (G B E? wait — D string 5=G, G string 5=C, B string 5=E → G C E. Open shape variant)
1st inv:    2-3-3   (E on D, G on G, C on B → E G C)
2nd inv:    5-5-5   (G on D, C on G, E on B → G C E)

(The exact fingerings vary; the point is that triads on the top strings give you all three inversions easily.)

Triads on string sets

The three “string sets” — top 3 strings (1-2-3), middle 3 (2-3-4), and next (3-4-5) — each have three inversions of every triad up the neck. Mapping these is one of the highest-leverage exercises for chord-melody and modern jazz/funk playing.

A great drill: play the C major triad in all three inversions on each string set. That’s nine fingerings of the same chord across the neck. They cover every place you’d ever want to play a C major triad.

Try this

Pick a simple I-IV-V-I in C: C → F → G → C. Now play it again but make the bass note descend by step or skip as little as possible:

C/G → F/A → G → C

The bass moves: G → A → G → C. Smoother than C → F → G → C.

That tiny change is the difference between hobbyist and pro.