Have you ever spent too much time trying to get the upper caps on your valves started? This is a common problem and the solution is very simple. Sometimes the threading on the upper caps is less than perfect as it is on my Yamaha Bobby Shew trumpet. Getting them started- Before you try to screw down your top valve caps, turn them in the opposite direction. As you spin them in the unscrew direction, you will notice that the cap will give a soft click as it drops into the correct position to begin screwing the cap back down.…

The following material was reprinted from…… https://www.yamaha.com/en/musical_instrument_guide/trumpet/selection/ “Timbre will vary with the quality of the material The timbre of a wind instrument is determined by the way in which the air inside it vibrates. Hence, the timbre depends not only on the shape of the instrument and the length of its tube but also to a subtler degree on the quality of the material of the vibrating tube. The varying composition of brass Brass is the most commonly used material for making “brass” instruments such as the trumpet. Brass is an alloy of copper and zinc and has long been…