Step 1 of being a bass player: play the root note of whatever chord is happening, exactly on beat 1, locked to the drummer. That's it. If you do only this and nothing else, you're a functional bass player in any band.
What's a root note?
The root of a chord is the note the chord is named after. C major's root is C. G minor's root is G. F7's root is F. Almost no exceptions.
Find the roots on the bass
Every fretted note on the bass has a name. The first frets of each string:
G string: G G# A A# B C C# D D# E F F# G
D string: D D# E F F# G G# A A# B C C# D
A string: A A# B C C# D D# E F F# G G# A
E string: E F F# G G# A A# B C C# D D# E
(Sharps are also flats: A# = Bb, D# = Eb, etc.)
You only need to memorize the E and A strings for now. Those two strings cover every note in the lowest octave.
Play roots for a song
Pick any pop song. Note the chord names. Find each root on the E or A string. Play one quarter note per beat, on each chord, locked to the click.
Example: a G → D → Em → C progression (the Wonderwall progression). The roots:
- G = E string, 3rd fret (or A string, 10th fret)
- D = A string, 5th fret (or D string open)
- Em = E string open (or open E)
- C = A string, 3rd fret
80 BPM, 4 beats per chord. Loop: G G G G | D D D D | Em Em Em Em | C C C C.
You're playing bass.
(The visualization shows where every C is on the bass, useful for finding root notes for any chord progression.)
Next: walking bass lines. The 1-3-5-octave move that turns root notes into a melody.