I understand the theory behind walking bass lines (scales, arpeggios, approach notes). But do people consciously use these rules in the actual process of creating a bass line?
With
years of playing bass-lines, one would develop, kind of, automated (subconscious, "out-of-the-box") bass-line templates for this/that rhythm pattern, for this/that (similar) chord progression, etc...
Let's say, you hear a bossa-nova rhythm pattern or a country music rhythm pattern, and your mind immediately produces a (more or less) generic bass-line rhythmic template.
A chord progression (recognizable by your mind) allows you to (immediately) add embellishments, fills, etc...
In addition, a knowledgeable bass player has already a good understanding about the
structure/form of the song.
And that knowledge of the song's form
must be heard in your bass-lines.
The song's structure/form knowledge is a very good helper while
developing (composing) bass-lines within one song.
But...
After
years of crafting/creating/playing bass-lines, you start noticing that your (created) bass-line/s is/are repeating itself, and you start working on creating "unusual, unpredictable,
fresh" bass-lines.
Sometimes, it happens suddenly - "
I don't know what caused it,"
sometimes, it happens by "physically" rearranging the notes, removing some of them "over here" and adding them "over there."
Those "new kind" of bass-lines don't need to be complex or technically-challenging ones.
No, they are just (
slightly) different than your mind would create.
Here is a "new kind" bass line that my mind would not automatically produce.
Idesia - Back and Forth.
Bass - Daniel Oldham
Here is a "filtered and EQ-ed version with an added metronome (for better hearing affect) of the same track, but the bass-line is in the aural "front" and dubbed (an octave higher.)
But, even "new kind" of bass lines are knowledgeable of the song's form!
https://www.talkbass.com/attachment...0/?temp_hash=5d51d64d0418d504bc635e2cb1123898