Open D tuning is one of those things that sounds complicated until you actually sit down with it. Then everything clicks. Tune your guitar to D A D F# A D, strum it open, and you’re already holding a full D major chord without touching a single fret. That’s what makes slide guitar in open D so satisfying to play.

Colin Daniel has been playing slide guitar for decades, and in this lesson he walks through the core moves you need to know in open D major tuning. He’s not showing you tricks for their own sake. He’s showing you the vocabulary that makes this tuning make sense.

The Three Primary Changes

The I, IV, and V are the backbone of just about every blues tune you’ll ever play. In open D, those three chords sit at very logical positions on the neck. The I chord is open. The IV chord is at the 5th fret. The V chord is at the 7th fret. And the whole thing repeats an octave up at the 12th fret.

With a slide, you just lay the glass or metal across all six strings at those positions. Because the open tuning already forms a chord, every one of those fret positions is a full, in-tune chord. No awkward partial barres, no muted strings. Just clean, ringing changes.

That’s the practical beauty of open tuning for slide playing. The guitar is already doing half the work.

The Perfect Fifth Is Your Foundation

Here’s something Colin points out that a lot of players miss. In open D tuning, the 6th and 5th strings are tuned a perfect fifth apart — D and A. If you’ve played any rock guitar, that interval should ring a bell. That’s a power chord.

So when you lay your slide across those two bass strings, you’re playing the same foundation you’d find in a thousand rock songs. It’s familiar, it’s powerful, and it growls when you dig in. That bottom end becomes part of the chord rather than just background noise.

Adding the Major Sixth

This is where Colin’s approach gets interesting. Once you’ve got that power chord foundation locked in, you add the major sixth. Your third finger frets up from the fifth, and suddenly you’ve gone from a bare two-note grip to something that sounds thick and full — like more than one guitar is playing.

The back-and-forth movement between the perfect fifth and the major sixth is the engine of the boogie pattern that sits underneath a lot of blues playing. It’s rhythmic, it’s satisfying, and once you hear it in context you’ll recognize it immediately from classic recordings.

Mixing Rhythm and Slide

One of the things that separates Colin’s approach from straight slide playing is that he doesn’t stay in slide mode the whole time. He mixes rhythm parts with slide parts throughout a song. You might play the rhythm pattern with your fretting hand for a few bars, then pick up the slide for a phrase, then come back to the rhythm.

This creates the illusion that two guitars are playing when it’s really just one. The rhythmic chug of the boogie pattern underneath the singing slide melody on top. It’s a genuinely satisfying thing to pull off.

If you want to go deeper with slide guitar, Colin’s full course covers all of this in much more detail. But this lesson gives you the key pieces to start hearing how open D tuning actually works, and why so many blues and roots players keep coming back to it.

For more on the blues fundamentals that sit underneath all of this, check out the blues guitar lessons hub — it covers everything from basic 12-bar structures to more advanced techniques.

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Ready to take this further? Check out Colin’s full slide guitar course and get comfortable with everything open D has to offer. The tuning opens up a whole side of the instrument that standard tuning simply can’t touch.