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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. Experimental Golden Melody comb
    3 years 9 months ago
  2. Overblows, Overdraws and Tight Gaps
    4 years ago
  3. Torsional Vibrations
    4 years ago
  4. Myths
    4 years ago
  5. Hohner Flex Case M
    4 years 6 months ago
  6. How to play the full chromatic scale on a diatonic harmonica
    4 years 7 months ago
  7. Altering Standard Richter to Wilde Tuning
    4 years 8 months ago
  8. Marine Band Reed Chart
    4 years 9 months ago
  9. Embossing is part of Framework
    5 years ago
  10. Embossing does not fix air leak
    5 years 1 month ago
  11. What tools do I need?
    5 years 1 month ago
  12. Quick Videos
    5 years 1 month ago
  13. Opening the back of a Special 20 or Marine Band 1896
    5 years 1 month ago
  14. It's difficult to make an embossing tool
    5 years 2 months ago
  15. Marine Band comb in Original Hohner Meisterklasse (pre-MS)
    5 years 3 months ago
  16. A new comb color
    5 years 3 months ago
  17. Is a custom harmonica "better" than a stock harp?
    5 years 4 months ago
  18. Question: Why are the positions numbered like that?
    5 years 5 months ago
  19. What are the steps to customizing a harmonica?
    5 years 6 months ago
  20. WARNING / GUARANTEE
    5 years 8 months ago
  21. Comb Density
    5 years 8 months ago
  22. Forget about temperament! Freestyle tuning with the Tuning Card
    5 years 8 months ago
  23. Using the French Tuner™
    5 years 9 months ago
  24. The Gapping Paradox
    5 years 11 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