How to Start Overblowing on Harmonica
This week, we’re doing something a little bit special—I’m going to show you how to start overblowing on harmonica.
Before we dive in, I want to be super clear: overblows are not some magic trick you’ll get on the first try. They take a bit of finesse—no brute force required. So let’s make sure you’re ready, and then I’ll walk you through some practical steps to help you get your first overblow happening.
Click here to download the Overblow Checklist
Want a simple step-by-step summary? I’ve put together a downloadable PDF checklist to help you troubleshoot your overblows—everything from gear to mouth shape.
Are You Ready to Overblow?
Overblows are advanced—but they’re not impossible. That said, there are two really important prerequisites.
Can You Bend Draw and Blow Notes?
You need to be able to draw bend holes 1 to 6 and blow bend holes 7 to 10. If you can’t do that consistently, overblows are going to feel like banging your head against a wall. So if you’re not there yet—go back and work on your bends first.
Do You Have a Good Harmonica?
You don’t need to splash out on a custom harp, but you do need something airtight. I’d recommend a Hohner Marine Band, Special 20, Suzuki Manji, or Olive. If you’re using a $5 toy harmonica, you’re not going to get very far. One quick note—Lee Oskars are solid harps, but they’re notoriously difficult to overblow on. I learned that the hard way.
Don’t Blow Harder
The name “overblow” is misleading. You don’t need to play harder—in fact, if you try to force it, you’ll actually make it harder. It’s all about finesse—controlled airflow and precision embouchure.
What Is an Overblow?
An overblow is a technique where you play a blow note and raise its pitch by activating the draw reed—while muting the blow reed. It only works on holes where you’d normally do a draw bend (so holes 1 to 6).
Let’s take hole 6 as an example. If you play the 6 blow, then do an overblow, you’ll hear the pitch go up—unlike a bend, which drops the pitch.
Try This to Get Your First Overblow
You might not get it right away. Most people don’t. But here are a few tried-and-tested ways to get your first one.
Method 1 – Use an 8 Blow Bend Shape
Start by playing an 8 blow bend—then move that mouth shape down to hole 6. Keep everything the same and blow while saying “heeeee” in your head. That “ee” shape helps get your tongue in the right place.
If you don’t get it—no big deal. Try the next one.
Method 2 – Start With a 6 Draw Bend
Play a 6 draw bend—then keep that exact shape and try blowing instead. Again, use the “heeee” sound. If you hear something weird, like a squawky or feedback-y sound, that’s a good sign. It means you’re getting close.
Still Struggling? Try Isolating the Reeds
This is how I really learned to overblow.
Take the cover plates off your harmonica so you can isolate the blow and draw reeds.
Step 1 – Mute the Draw Reed
Find the 6 draw reed on the bottom plate and cover it with your thumb. Now play a 6 blow and try to bend it until it mutes. That means the blow reed is getting close to the plate—this is crucial for overblowing.
Keep doing this until you can get it to mute consistently without using too much air.
Step 2 – Mute the Blow Reed
Now cover the 6 blow reed on the top plate with your finger. Try using the same mouth shape as before and gently draw breath while saying “heeee.” You’re trying to activate the draw reed without the blow reed interfering.
This step-by-step approach—muting each reed separately—helps train your mouth and brain to coordinate the movement needed for an overblow.
Don’t Tweak the Reeds Yet
Yes—reed adjustment can help you get overblows more easily. But I strongly recommend waiting. Spend a bit of time seeing how far you can get naturally. Once you’re comfortable with the coordination, then you can start making tweaks.
When you’re ready, check out my full guide on how to adjust harmonica reeds for overblows.
Keep at It—and Be Gentle
Learning to overblow is like learning to bend all over again—it feels impossible at first, but if you stick with it and stay gentle, it will come together. Don’t be discouraged if it takes a while.
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Happy harping!
