Trombone is an instrument made up of various metals and consisting of 3 major pieces, a bell piece, the slide, and the mouthpiece. The section or piece that makes the trombone’s unique sound is the mouthpiece. The player puts their lips in the cup of the mouthpiece in order to cause a vibration to make the sound you hear. But have you ever wondered how and what allows any instrumentalist to be able to play different pitches, notes, and rhythm? I don’t think many people ever think of how fascinating it is to break down the science behind playing such an interestingly shaped instrument. To break down the basics, a trombone is a gigantic tuning slide. The trombone itself changes its sound by using the slide to move it up and up down to create the different pitches and frequencies. Your traditional trombone is constructed using metal and then using techniques known as “sintering” (yamaha.com ) and heating of the bell as well as “washing it in acid and hammering into its bell shape”. A “skilled craftsman worker” (yamaha.com) then continues to shape the bell with a tool called a “cored bar”.This forms the standard bell piece that you are used to seeing on a typical trombone and is different for each one you see. Just like a snowflake, no two bells are the exact same, but of course there is a very specific finished product the craftsman are going for. At this point of the long process, you will begin to familiarize yourself with a major part of the instrument. Understanding how each piece is made is a vital part of understanding how the sound actual travels through the horn, and how every trombone is meticulously made in order to create that unique sound you hear in a concert, jazz, or band you listen to. Furthermore, another extremely important task amongst someone who is constructing a trombone, is to make sure the slide is straight. As it says on (yamaha.com “How the Trombone is Made”), ” For a 70 cm slide tubing, even a 0.2 end to end curve would render it”, or basically make the trombone useless. As you can conclude, a trombone is a very particular instrument in the process of making it, but what about the playing of it? A trombone starts of as wielded pieces of metal constructed by fine craftsman in order to correctly form the bell, proper slide, mouthpiece etc. Though a trombone is able to produce higher pitches, some of which can equal up to a trumpet’s range, it is much more commonly recognized for its “lower resonances”. (R. Nave, hyperphysics.edu) The resonance of a sound it just how full or deep it portrays itself to be. So being that the trombone is a low brass instrument, it has a lower tone which is deeper and carries itself a lot less piercing and direct as the sound of a trumpet. This has to do with the way the trombone is constructed in the very beginning stages and how it developed over time. The more outward and the way the tubing is shapes makes the most resonant and lower sound previously discussed.