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Custom Harmonicas by Andrew Zajac
The most expressive harmonicas

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Andrew's Harmonicas

Custom Harmonicas:
I customize diatonic harmonicas to connect deeply with the player. Each instrument is remarkably responsive, has amazing tone and tuning, and is adjusted to your playing style.
My harmonicas are loud. They've got fat tone. They allow effortless bending of notes.
Custom harmonica information page.
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Custom Harmonica Combs:
Darken your harmonica with one of my combs. My Dark combs™ are measurably better than factory-made combs. They are made from environmentally-responsible materials. They are beautiful, durable, airtight, waterproof and comfortable to play.
Dark combs page
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Harmonica tools and customization instruction:
Getting your harmonica to perform best is meticulous work. I offer a complete set of innovative tools. I offer learning products that help you tackle the learning curve of upgrading and customizing your harmonica.
After years of work, I'm still excited about the process! I'm learning new things all the time. I update my tools and learning materials continuously.
Tools page

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Hand Made

My custom harmonicas, combs and tools are made to order.
Production times are 16 business days or less for combs and tools.
Current production time for custom harmonicas are shown on the top of the custom page.
Thanks for your support.
Andrew

Selected blog posts

  1. Compact reed plate claws tweak
    16 hours 21 minutes ago
  2. Music makes us human
    4 days ago
  3. The Hockey Stick (for tuning the harmonica)
    1 week ago
  4. (FAQ) Should a rank beginner buy a custom harmonica?
    1 week 4 days ago
  5. A good file for tuning a reed.
    3 weeks 2 days ago
  6. Dark Comb model types
    3 weeks 5 days ago
  7. "Is there a way to fix it without breaking it or is it just dead?"
    2 months ago
  8. Flat Sanding the draw reed plate for airtightness
    2 months 1 week ago
  9. How to use my Quick Customizing Videos
    2 months 3 weeks ago
  10. Multi tool: One of the reasons I find it really cool!
    6 months 2 weeks ago
  11. Andrew Zajac customization multi-tool
    8 months ago
  12. Essential Tool Kit
    1 year 5 months ago
  13. Essential Tool Kit
    1 year 5 months ago
  14. Weird Science
    1 year 6 months ago
  15. From an email: Common question about temperament
    1 year 6 months ago
  16. Off-menu items
    1 year 7 months ago
  17. "How do I make my harmonica play like a custom harp?"
    1 year 7 months ago
  18. Replacement reeds odyssey
    1 year 11 months ago
  19. Half-Step bends
    2 years ago
  20. Standard and Compact Reed Plate Claws
    2 years 3 months ago
  21. Altering Standard Richter to Spiral Tuning
    2 years 5 months ago
  22. Hohner PentaHarp
    3 years 7 months ago
  23. The Reed Plate Holder
    3 years 9 months ago
  24. A new video for the Reed Plate Claws™.
    3 years 9 months ago
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Custom diatonic harmonicas, Hohner Affiliated Customizer.
I customize Hohner Marine Band, Rocket, Special 20, and Golden Melody harmonicas.
Andrew Zajac, Kingston Ontario, Canada.
I use a continuous quality improvement process. I use regular evaluation and incremental steps to strive for constant improvement.
Website, text, photos, videos, download documents, designs and products by Andrew Zajac are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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Copyright © 2025 Andrew Zajac - All rights reserved