Lick Substitution: How to Improvise in Scruggs Style

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Lick substitution is the core mechanism behind Scruggs-style improvisation, and understanding it changes how you think about the whole approach. Instead of conjuring new phrases on the spot, you lift a familiar figure out of a tune and drop a different one in its place. The tune stays intact. The listener stays with you. But the music breathes, because you made a choice.

If you have been reading through Tony Trischka’s five-part improvisation roadmap, you already know that banjo improvisation is a learnable, layered skill. This article lives at the center of that roadmap. It explains what lick substitution is, where the vocabulary comes from. How to practice the swap in a deliberate, low-stakes way so it eventually becomes automatic.

What Lick Substitution Actually Means in Practice

Scruggs-style playing is modular. Phrases are relatively self-contained. Because of that structure, you can pull one phrase out of a tune and insert a different one without collapsing the music around it. That is lick substitution in plain terms.

Tony further expands, quoting banjoist Kristen Scott Benson: “Within a Scruggs-style bluegrass context, improvising is similar to building with LEGO pieces. The chunks or musical phrases are largely repetitive and uniform among players, but the creativity comes from your unique assembly of those chunks in real time.”

That analogy is precise. The pieces themselves are mostly shared across the repertoire. What distinguishes one player from another is which piece they reach for, and when.

So the question shifts. Instead of “what do I invent?”, you ask “which piece fits here, and do I have a different one I could use instead?” That is a far more workable problem. It also explains why building a large phrase vocabulary matters so much in this style.

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Lick Substitution: How to Build the Vocabulary You Need to Substitute

The fastest way to accumulate substitutable phrases is to study multiple recorded or transcribed versions of the same tune. Tony Trischka and educator Wes Corbett both point toward this approach directly. When you learn how three or four different players handle the same eight-bar section, you end up with three or four different phrases that all work in the same spot. That is your raw material.

For example, a double forward roll pattern is a concrete phrase you can begin reshaping immediately. Because of how Scruggs-style fingering works, that same roll can be adjusted to a different chord voicing or moved to a position Earl Scruggs used on another well-known tune.

In other words, one learned shape becomes two or three usable chunks. This kind of cross-pollination is exactly how the vocabulary grows.

Because the phrases are largely shared across the tradition, there is no shortage of source material. Transcriptions, recordings, and courses all feed the same pool. The goal is simply to keep adding to it.

Lick Substitution: Stay Close to the Melody Before You Substitute

Lick substitution works best when the listener still hears the tune underneath. If you substitute too aggressively, too early, the thread breaks. Tony Trischka’s solution is to stay close to the melody and, specifically, to the lyric rhythm. He traces this approach to watching John Hartford perform. Hartford would lip-sync the words while playing, which kept his fingers locked to the syllables. The melody never drifted far.

For you, that means singing the words internally while you play, even on an instrumental tune. The syllable rhythm acts as an anchor. When your phrase choices follow that rhythm, the tune remains audible. As a result, the listener tracks the music even when you have swapped in a phrase they have never heard from you before.

This “sing the syllables” approach connects directly to staying grounded early in a solo. For more on how to stay oriented when the improvisation feels unsteady, the article on getting started without the fear of wrong notes covers that ground specifically.

Lick Substitution: How to Practice the Swap Without Getting Lost

Start with a tune you already know well. On the first pass, play it close to the melody with minimal substitution. Then, on the second pass, identify one phrase you feel confident about and replace it with a different Scruggs lick from your vocabulary. Keep everything else the same. Alternate between the two passes until the swap feels settled.

After that, try a different phrase in a different spot. Gradually, the substitution becomes less deliberate and more reflexive. That is the goal. You are training yourself to reach for something different without stopping to think about it.

This is also the point where free improvisation becomes useful as a practice tool. Because free playing loosens the grip of familiar patterns, it makes room for new phrases to surface. The article on why free improvisation strengthens your overall playing explains that connection in detail.

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One First Substitution to Practice Right Now

If you want a concrete starting point, the double forward roll pattern is a strong first candidate. It is recognizable, it sits well under the fingers, and it transfers easily to different harmonic contexts. Start by learning it in one setting, then find a spot in a tune where it fits. Next, locate a second phrase that covers the same spot. Now you have a substitution pair.

Practice moving between those two phrases in isolation before putting them back into the full tune. Once the swap is clean in isolation, it will hold up in context. For players ready to extend this work into movable shapes and targeting specific chord tones, the article on advanced banjo improvisation with movable shapes picks up exactly where this leaves off.

Scruggs Style Is a Vocabulary Problem, Not an Inspiration Problem

The deepest shift this approach requires is conceptual. Scruggs-style improvisation is not about waiting for inspiration. It is about expanding the pool of prebuilt phrases you can draw from, and then trusting yourself to reach for a different one in the moment.

That trust builds gradually. First, you build the vocabulary. Then, you practice the substitution deliberately. Eventually, the reach becomes automatic. The creativity Kristen Scott Benson describes, the unique assembly of shared chunks in real time, emerges from that process. It is not separate from the mechanics. It is what the mechanics produce, once you have done the repetition.

For a broader view of how lick substitution fits into a full improvisation practice, return to the five-approach framework for banjo improvisation. Each approach reinforces the others, and lick substitution sits at the center of all of them.

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