My first valve of my trumpet will not go all the way down, I can't

15 Reasons Why the Trumpet is The Most Difficult Instrument to play – Trumpet Blog

My friends Monette.. just wow : r/trumpet

One of my trumpet valves gets stuck on its way up while I blow the horn. Is this a sign of dirt build up or damage to the valve casing? What can

Why is my valve not going on my trumpet? - Quora

I Cant Get Air Through My Horn! – Trumpet Blog

Wrong Oil Applied to a Trumpet Valve and How To Fix It

Trumpet Quickstart Guide

How to Play the Trumpet (with Pictures) - wikiHow

Why is my valve not going on my trumpet? - Quora

First valve clicking? - View topic: Trumpet Herald forum

Stuck 2nd valve slide (been stuck since I got trumpet from cousin) can it be fixed at home? : r/marchingband

Best Trumpet Valve Oils: A Complete Guide

The Structure of the Trumpet:How does the trumpet generate sound? - Musical Instrument Guide - Yamaha Corporation

Freeing Stuck Valves — Robb Stewart Brass Instruments