If you’re wondering how to double thumb on bass, developing the right approach starts with understanding how this advanced technique differs from traditional slap bass.
Popularized by players like Victor Wooten and expanded by modern progressive musicians like Animals as Leaders, double thumbing allows bassists to build speed, control, and rhythmic flexibility.
In a recent Musicians Institute bass tutorial, MI alum Hampus Isaksson breaks down how to double thumb on bass and shares practical exercises for building the technique step by step.
What Is Double Thumb Bass Technique?
To learn how to double thumb on bass, it helps to first understand how it differs from standard slap bass.
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Traditional slap technique uses a downward thumb strike to create a percussive attack.
Double thumbing changes that approach by turning the thumb parallel to the string and using both downward and upward motion, similar to alternate picking.
This creates a smoother, more fluid motion and opens up new possibilities for speed and articulation.
How to Double Thumb on Bass: Start With Positioning
The first step in learning how to double thumb on bass is adjusting your thumb position.
As demonstrated in the lesson, the thumb should stay parallel to the string rather than angled up or down.
This allows for a clean up-and-down motion across the string.
If the movement feels unfamiliar at first, slow practice is essential. Building control gradually helps establish clean articulation before increasing speed.
Adding Finger Combinations
Once the core motion feels natural, the next step is adding finger combinations.
Hampus demonstrates how combining thumb strokes with index and additional fingers creates rhythmic groupings of three, four, and five notes.
These combinations expand your phrasing options and help build greater right-hand coordination.
Applying Double Thumb in Musical Context
Understanding how to double thumb on bass becomes much more valuable when applied musically.
The lesson explores combining double thumb technique with left-hand hammer-ons to create modern riff-based patterns inspired by progressive bass playing.
Using arpeggiated chord shapes, players can turn technical exercises into musical ideas they can move across the fretboard.
Developing Advanced Bass Technique at MI
Advanced techniques are developed through focused practice and expert instruction.
Hampus credits Musicians Institute with giving him access to the instructors and resources that helped him develop techniques like double thumbing.
MI’s Bass Program helps students build technical precision while exploring modern performance approaches across styles.
Watch the Full Lesson
Want to see exactly how to double thumb on bass?
Watch Hampus Isaksson’s full tutorial on our Musicians Institute YouTube channel and start applying these concepts to your own playing.
Watch the tutorial here: