Microtones - The Modern Trumpet by Nathan Plante
Trumpet Quarter Tone | PDF
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The Double-Bell Quarter-Tone Trumpet (and more!) - Instrument Demo and Extended Techniques - YouTube
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Quartertone - Van Laar Trumpets & Flugelhorns
The Microtonal Trumpet – Microtonal Projects' BLOG
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MTP quarter-tone trumpet Mod. BV1 in B. Quarter-tone music at an affordable price. Buy
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Microtones - The Modern Trumpet by Nathan Plante
The 4 valve microtonal trumpet – DONALD BOUSTED Edition
Don Ellis: Trumpet (and Quarter-tone Trumpet) – Essential Trumpet Lessons
Double-bell quarter-tone trumpet - Amy Horvey
