The following two examples introduce the eighth note (6).
In Blues and other popular contemporary music eighth note rhythm patterns are very common because of their "strong drive" especially when some of the notes are repeated.
For ease of playing, use the 1st and 3rd fingers as indicated, and when changing from E to F# leave the first finger down in preparation for the next E note. In this example, the riff is applied to a 12 Bar Blues in the key of A.
This example uses a riff in the key of G combining quarter notes and eighth notes. Note that this time the notes are not played in the open position. Memorize this riff so it can be played in different positions on the fretboard for each chord.
This example is the application of the previous riff to a 12 Bar Blues progression in G.
For more Blues bass licks incorporating quarter and eighth notes see Progressive Blues Bass Licks.