Standard Tuning on 4-String Bass: Notes, Chords and How to Use It
Standard tuning is the home base of the 4-string bass. It's the tuning on nearly every recording you've ever heard a bass on, from pop and rock to funk, jazz and country, and it's the one every teacher, chart and tutorial assumes you're using. If you learn it properly now, how it's built, how to tune to it by ear and why its shapes behave so neatly, everything else on the instrument gets easier. So let's take it apart and put it back together.
The Four Open Strings
Hold the bass in playing position. The thickest string, the one nearest your chin, is string 4, tuned to E. Moving towards the floor you have string 3: A, string 2: D and string 1: G. Top to bottom: E, A, D, G.
A handy way to remember it: these are the same notes as the four thickest strings on a guitar, just an octave lower. That's no accident. The bass was designed to sit underneath the guitar and support it.
Notice the string numbers run "backwards" from what you might expect. String 1 is the thinnest, highest-sounding string, even though it's physically at the bottom. Get comfortable with that now, because tabs and lessons use it all the time.
Getting Into Tune, Step by Step
The best habit is to use a tuner for your lowest string and then tune the rest by ear. That trains your ears while you tune. Here's how:
- Tune string 4 to E with a tuner or a reference note.
- Press string 4 at the 5th fret. That note is A. Play it, then play open string 3. They should sound identical. If the open string sounds lower, tighten it; if it sounds higher, loosen it.
- Press string 3 at the 5th fret. That's D. Match open string 2 to it.
- Press string 2 at the 5th fret. That's G. Match open string 1 to it.
What should you listen for? When two notes are slightly out, you'll hear a wobble or "beating", a sort of wah-wah pulse. As you turn the peg closer, the wobble slows down. When it disappears and the two notes blend into one, you're in tune.
The 5th fret trick works on every pair of strings, which brings us to the most important thing about this tuning.
Why It's Built This Way: All Fourths
First, two terms. A half step is the distance of one fret. An interval is simply the distance between two notes. The interval between each pair of neighbouring strings here is a perfect 4th, which is five half steps, or five frets. That's why the 5th fret matches the next open string.
- E to A: perfect 4th
- A to D: perfect 4th
- D to G: perfect 4th
Every gap is the same. Guitarists don't get that luxury, they have one odd gap that forces them to change shapes. On bass, a pattern you learn on strings 4 and 3 works exactly the same on strings 3 and 2, or 2 and 1. Learn it once, use it everywhere.
Fourths also keep everything within reach. Your hand can cover a lot of musical ground without big stretches or constant jumps up the neck, which matters on an instrument with frets this wide.
What Happens When You Strum the Open Strings
Try it: brush your thumb across all four open strings. You'll hear E, A, D and G together, and it sounds open, hollow and a bit unresolved. It isn't a major chord (happy-sounding) or a minor chord (sad-sounding), because those are built from thirds, and this stack is built from fourths.
That's fine. Bass isn't usually strummed like a guitar, and low notes played together get muddy fast. Bassists mostly play one note at a time, or two notes spread wide apart. But those open strings are still a gift: they ring freely and you can play them while your fretting hand moves into position. An open E or A under a riff makes a big, heavy drone, a steady note that holds the music down. That's a big reason why so many rock and metal riffs live around E and A.
How Shapes Move Across the Neck
Because every string gap is a 4th, a few simple shapes unlock a huge amount of bass playing. Pick any note as your root, the note a chord or scale is named after.
- Octave (the same note, higher): two strings over, two frets up.
- Fifth (the strong, stable partner of the root): one string over, two frets up.
- Fifth below: same fret, one string back towards your chin.
- Major third (the bright, happy note): one string over, one fret back.
- Minor third (the darker, sadder note): one string over, two frets back.
Root, third and fifth together give you the outline of a chord. Bassists call this an arpeggio: a chord played one note at a time. Since the shapes never change from string to string, you can slide the same pattern anywhere and it'll still be right. Scale shapes work the same way.
For two-note chords, try the root plus the fifth on the next string up. Or play the root on string 4 and the third an octave higher, two strings over. Spreading notes apart like this keeps them clear instead of muddy.
Your First Thing to Try
Play open string 4 (E). Then play string 3 at the 2nd fret (B, the fifth). Then string 2 at the 2nd fret (E, the octave). Come back down: B, then E. That's root, fifth, octave, the most-used pattern in bass playing.
Now move it. Start on open string 3 (A), then string 2 at the 2nd fret, then string 1 at the 2nd fret. Same shape, new chord. Play it slowly along with a drum loop or metronome, let each note ring its full length, and listen to how solid it feels under a beat. Ten minutes a day of this, moving the shape to new roots, and you'll be surprised how quickly the whole fretboard starts to make sense.
More on the instrument itself: the 4-String Bass guide.