How to Write a Bass Line to a Chord Progression ?

A bass line generally refers to the series of notes that you tend to play upon your guitar. You need to have a keen interest in the beats, keys, chromatic notes, notes, and scale of the song alongside the play style and feel of the songs.

Not only does a bass line have to be according to the chords that are being played, but also needs to pay attention to the rhythm and dynamics. Bass is the glue that binds the rhythm and percussion sections together, so if you do mess up, it will mess up with the overall sound of the band.

Writing a good bass line is a skill that can take lots of time and practice, but hopefully, this post will help you get going. Below, you will learn how to write fantastic bass lines through the following sections:

Table of Contents

Bass Line Theory

The bass line theory is the regard with which you create your lines on bass guitar to establish a coherence with the drum beats and the rhythm or lead guitars and let them play free over the notes. It’s a pretty basic logic where the flat-pitched bass strings are played on a low pitch to lay a foundation for other instruments to do further wonders.

The bass lines lay a feel upon the song and direct the other instruments to play likewise, just to create a masterpiece.

For example, whilst the rhythm plays a C major note and the bass adds upon an E note, it eventually gives off an E minor chord with minor tonality.

How is melody different than bass?

Melody gives off an entirely different feeling. The notes that you hear on an acoustic 6 string with the lower strings doing most of the job, is actually called a melody whereas the 4 strings of the bass guitar that give off a low-pitched tone are what we call bass note.

Bass notes aren’t sharp and might not be noticeable with high pitches being played over them, however, they’re the ones who create the synergy by aiding in chord transitions throughout the play.

What are Chords?

Chords are basically the union of two or more different notes. Before jumping into chords, let’s start with the basics i.e. about notes and scales.

Notes are just individual bests/ plucks done upon an instrument. In the case of a bass guitar, plucking a string gives off a note and with the transition of fingers to the left brim of the guitar gives off a precisely different sound which defines the alternation of notes. Notes are graded as per the precision of sounds emitted i.e popularly C, D, E, F, G, A, and B.

Scales are a definite set of notes that you play upon your instrument. Scales are just the set of notes that are jumbled upon and are meant to be embedded likewise on a track. For example, when you say C major scale, it includes other notes in series i.e D,E,F,G,A and B with C as the root.

It also includes progressions or modifications upon the notes like majors, minors, the pentatonic, blues, modes, and the arpeggios.

Chords are basically the set of two or more two notes upon a definitive scale that sets the mood of a song. A song/music generally defines either a good vibe or a sad vibe. Vibes are represented with a precise set of such notes. For example, when you hear that a song starts with a C major, the chord is played with 3 finger position involving a C note as a base with E and G as follow-up notes. These three collaborate to give off an entirely new and heavy note which is basically a chord. The root is generally followed by the 3rd and fifth of the same scale.

Chord progressions are mostly definitive upon the songs and you write and play bass lines that fit them. It’s as simple as that.

However just opposite to traditional guitars, bass guitars involve chord plays in fine inverted fingerpicking as compared to a clutch to the left and bang shot upon the group of strings on your right. It’s generally done to prevent the muddy effect

Chord plays might differ in a bass line where you play the series of notes with different inversions experimented upon them. Inversions involve first-degree and second-degree inversions with the third and fifth notes being played prior to the root notes.

How does the chord progression work?

A chord progression means the alternation of chords with respect to the scale, and the transitions set up a definite track for other instruments to play upon it.

It may involve chords and inversions as mentioned above as far as they are within the same chord arrangement and don’t deliver a messy hearing effect.

The most popular chord progressions, as referred to in the earlier example of c major chords involve the most popular 1-6-4-5 series. For a C major, the series involves a simultaneous play of C major, A minor, F major, and G majors.

Chord progression could be shown in the chart given below.

How to write a Bass-line?

Bass-line generally means the series of chords you play upon the guitar where you set up the mood of the song.

Bass lines of a song are always decisive with plenty of alternations possible via your four strings. The bass guitar always creates coherence between the instruments and as a bassist you lead the song in a supporting role where the chord plays are based on how the bass guitar plays. Even if the same chord is played in every instrument at once, the one who decides the feel of the song is the base. That’s why it’s a decisive instrument that sets up the mood of the song.

Alterations can be practiced via different changes on the chord progressions i.e whilst you play the progressions mentioned earlier (1-6-4-5), it could be playing the whole of the triads in the chords or just the base notes. While doing so you could also change the base notes with 1st inversion notes or 2nd inversion notes too.

For example; the 1-6-4-5 plays as C-major, A-minor, F-major, and G-major. The C major itself is a triad of C, E, and G. You could simply invert it and play an E major instead of C-major, eventually giving an E-A-F-G setup.

The easiest ways of writing a baseline (not entirely out of your head) could be done by:

Choose the best root note for yourself (try with a popular song note)
Know the chords that follow
Apply possible transitions
Embellish it
Check for advancements as far as you can
Bingo! Keep doing that till you create a masterpiece.

How to beautify it further?

Beautifying bass is also known as “embellishing”your bass, which means adding your choice of notes or trying transitions on chords, lengthening the play, repetition of notes, hammering on the bar, legatos, changing your octave range, and a further advancing known as Walking the bass.

Transitions on chords: It simply means changing your chords which must be done at perfect timing if you’re a beginner, whereas could be altered with your choices of Freeplay and improvisation.

Lengthening the play: It simply means playing a fine note as a prominent bossy note that would carry on the mood of the song.

Repetition of notes: It basically means repetitively playing a note to create a sync between two notes and killing the free moment in between. It is a fine way of modification that makes the play fun.

Hammering: It generally refers to a thump upon the string that creates a chuck and thud effect to the notes you hear. This adds up a mild percussion to your notes and they sound more catchy.

Legato/Sliding through Legato means connecting two notes to lengthen the playtime in between just to make the beats sound more smooth and connected. One of its prime methods is sliding where you slide through the same string to create a fine melody.

Changing your octave range: You could try playing the given note on different octaves to make it sound more clear and create a subtle variance to it. Playing with variances on octave generally means making the bass play relatively tougher. It requires advanced command over your unit.

Walking on the bass: It requires advanced command on your unit where the successive transitions involve free play with ascending or descending notes meant to be played on between the transitions.

FAQs:

How to write a bass line?

Writing a bass involves; choosing the best root note, knowing the chords that follow and using them with definite repetitions and transitions, beautifying them with various embellishment options, adding on possible advancements, and, there you have it! Now try to write a song over it.

How to play bass fluently?

There’s no hard and fast rule to get yourself super fluent with the strings. You need to practice; exercising your hand more often, fine notes playing first, and then only little by little when you get a hang of it, go with the advancements.

How long does it take to learn bass guitar?

Learning a bass guitar is as hard as learning any other instrument as it requires a lot of dedication.

If you practice around 2-3 hours a day, you could make up to the pre-advanced level in around 6 months. Yes, it requires a lot of dedication! Irrespective of how talented you are at playing any instrument, there would always be something that you lack, which means learning never stops!

Can I play the bass guitar like a regular acoustic guitar?

Well, this depends on your proficiency in the acoustic guitar. If you have a sense of notes or are an expert with the acoustic one, getting your hands on bass won’t be that hard at all. But if you are a newbie or an intermediate in playing acoustics with only rhythm in your muscle memory, you’ll be starting from scratch!

Can I play famous songs on the bass guitar?

Yes definitely, most of the popular songs do have bass guitars used while composing the track. You might have not noticed it as you are mostly into the drum beats or the leads. Try checking out on the internet, I bet you’d be surprised!