Welcome to the new updated website for Burke Trieschmann, DBA- Open Door Productions and Open Door Harmonicas.  I am hoping to make the site more responsive to updates from the content side and feedback from visitors.  Suggestions for improvements are much appreciated.

The site has been reconstructed on the WordPress platform which will allow a more dynamic and interactive site and experience for the visitors.

Future upgrades, pages and postes will include music and video players on appropriate pages, and online shop for harmonica related items.

I hope you enjoy the site.

Burke T.

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Custom Diatonic Harmonicas


RT_Harps_pic3I offer custom and optimized harmonicas for the following manufacturer’s models:

HOHNER:  All Marine Band Models (1896 Classic, Deluxe, Crossover, Special 20, 364 and 365’s), Rocket, Thunderbird, Golden Melody, All MS Models, XB 40’s.

SUZUKI:  Manji, Promaster, Olive, and many other models.   Also Special Custom modifications to 30 reed Sub 30 Harmonicas.

SEYDEL:  All 1847 Models (Classic, Silver, and Nobel).  Please ask about other models.

LEE OSKAR:  Optimization only.  Please inquire.

For rates and more information please contact: info@opendoorprod.com



Burke Trieschmann:  (composer, sound designer, and multi-instrumentalist) has been providing quality soundtracks for the audio and video game industry for many years. His production company, “Open Door Productions” offers complete sound design and audio production packages for video games, film, video, and other interactive media. Services include music composition, scoring to picture, sound design and effects, character voices, and dialog recording / editing services. Open Door Productions also offers comprehensive recording and music production packages for recording artists and other media that require high quality music, audio production, and sound design.


Recently added for 2014:  Harmonica Customization and Repair services.     (This page is currently under construction). 

Please contact: info@opendoorprod.com for the latest information on harmonica services and rates.


After spending many years in the music industry as a recording engineer, producer and performing artist, he has taken this skill set and experience into the world of interactive music and video game soundtracks. Recent titles include work on:  Kung Fu Panda World, How To Train Your Dragon, Pictionary, Disney Channel All Star Party, Tomb Raider Underworld, The Simpson’s Movie, High School Musical III, Tony Hawk’s DownHill Jam, Shrek Super Slam, Madagascar, Lord of the Rings (Return of the King), ToeJam & Earl III, Tiger Woods Golf, and many others.

With numerous credits and over twenty years of experience providing music and sound to the video game industry, Open Door Productions can deliver quality soundtracks on time and on budget. Years of success as an independent production company are a testament to our many satisfied game developers and clients.

phone:  510-409-8126