1-4-5 Blues in the Key of A – Guitar Lesson

If you’ve ever tapped your foot to a blues song and thought, “I want to play that,” then you’re in the right place. The 1-4-5 blues progression in the key of A is where it all starts. It’s the backbone of blues music — the same pattern that powered legends like B.B. King, Stevie Ray Vaughan, and Eric Clapton. And the best part? You only need three chords to get going.

In this lesson, we’ll walk through the classic 12-bar blues chord chart, break down the A minor and major pentatonic scales, introduce the A minor blues scale, and give you some real-world examples to jam along with. Whether you’re just picking up the guitar or you’ve been noodling around for a while, this lesson will give you a solid foundation to start improvising and actually sounding like a blues player.

What Is the 1-4-5 Blues Progression?

The 1-4-5 refers to the first, fourth, and fifth notes of a major scale. In the key of A, those notes are:

• 1 = A (the root)
• 4 = D (the fourth)
• 5 = E (the fifth)

These three chords — A, D, and E — form the foundation of nearly every blues song ever written. The progression follows a specific 12-bar structure, which means you repeat a pattern of 12 measures over and over. It’s commonly played in a shuffle style, giving it that swinging, toe-tapping groove that makes blues music feel alive.

This structured framework is also what makes improvisation possible. Once you know where the chords land, you can start layering lead lines on top using both the major and minor pentatonic scales. That’s where the magic happens.

Ex 1: The 12-Bar Blues Chord Chart in A

Here’s the standard 12-bar blues layout. Each slash (////) represents one downstroke of the chord — so four slashes equal one full bar. Play through this progression and then repeat it over and over. That’s the blues.

Try playing this with a shuffle feel — instead of straight, even strums, give it a long-short, long-short swing. That rhythm is what separates blues from folk or rock strumming. Once you can loop this progression comfortably, you’ve already got the foundation under your fingers.

Ex 2: A Minor Pentatonic Scale (Position 1)

Now that you’ve got the chord progression down, let’s talk about what to play over it. The A minor pentatonic scale is the go-to scale for blues improvisation. It uses five notes — A, C, D, E, G — and it sounds incredible over the 1-4-5 in A.

Here’s the scale ascending (going up):

And here it is coming back down (descending):

Practice this slowly at first. Let every note ring out. Once your fingers know the pattern, speed will come naturally. This is the scale that’ll make you sound like you know what you’re doing — even if you just learned it five minutes ago.

Ex 3: A Major Pentatonic Scale

The A major pentatonic scale is the brighter, happier cousin of the minor pentatonic. While the minor version gives you that gritty, soulful blues sound, the major pentatonic leans more towards country, southern rock, and feel-good music. Think of the Allman Brothers or a sunny afternoon jam — that’s the major pentatonic talking.

Here it is ascending:

And descending:

A pro tip: try mixing notes from both the minor and major pentatonic while soloing over your 12-bar blues. That blend of dark and bright is exactly how players like B.B. King and Clapton get those complex, emotional leads. You don’t have to pick one — use both.

Ex 4: A Minor Blues Scale

Ready to add some extra flavor? The A minor blues scale is built on the A minor pentatonic, but with one extra note thrown in — the ♭5 (also called the “blue note”), which in the key of A is E♭ (or D#). This one note changes everything. It adds tension, grit, and that unmistakable “blues cry” to your playing.

Here’s what the scale looks like:

• A Minor Pentatonic: A – C – D – E – G
• A Minor Blues Scale: A – C – D – E♭ – E – G

That added E♭ (the blue note) sits right between D and E. When you slide into it or bend through it, it creates that raw, emotional sound that makes blues music hit different. It gives you just a little more to work with when you’re jamming — one more color on the palette.

Ex 5: Real-World Example — “Keep Your Hands to Yourself”

Want to hear the 1-4-5 in action? One of the best examples is “Keep Your Hands to Yourself” by the Georgia Satellites. That iconic intro riff is a perfect demonstration of the 1-4-5 at work. Here’s a simplified version of the intro pattern in A:

Play this pattern starting on A, then shift it up to D, then to E — and you’ve got the 1-4-5 working exactly as it should. This is the kind of riff that sounds way harder than it actually is, which is exactly why the blues is so rewarding to learn.

Blues Players You Should Be Listening To

If you’ve made it this far in the lesson — first of all, enjoy a soda or a beer. You’ve earned it. 🎉

Now, the best way to internalize this stuff is to listen. Here are some blues players and performances that’ll change the way you think about the guitar:

• Eric Clapton (especially with Cream)
• Jimi Hendrix
• B.B. King
• Albert King
• Stevie Ray Vaughan
• Samantha Fish
• Alvin Lee (Ten Years After)

Put on any record by these artists, and you’ll hear the 1-4-5 everywhere. It’s the same three chords — it’s what each player does with them that makes the difference.

Enjoy your lesson, keep practicing, and remember — every blues legend started right here, with these same three chords. Happy playing! 🎸

— Lesson by Ryan Dean Lindgren from the band Crimes in Graceland.

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