The students. Armstrong is a four-year public high school located in Plymouth, Minnesota and it is one of two public high schools in the district, along with Robbinsdale Cooper High School. As of the 2015-2016 school year, Armstrong has about a student population of 2005. About 41% of students are students of color.
The tuba (UK /ËtjuËbÉ/ or US /ËtuËbÉ/ ; [ËtuËba]) is the largest and lowest-pitched musical instrument in the brass family. Sound is produced by vibrating or buzzing the lips into a large cupped mouthpiece. It first appeared in the mid 19th-century, making it one of the newer instruments in the modern orchestra and concert band.
Brass is a yellowish metal that is a combination of copper and zinc. But some instruments that are made of brass, like the saxophone, are not considered brass instruments. So, what makes an instrument part of the brass family? For any sound to be produced, something has to vibrate, such as a column of air, a string, a reed, or a drum head. In the case of brass instruments, it is actually the player's lips that vibrate. This happens in a mouthpiece that's attached to the instrument, causing the air in the instrument to vibrate. Any instrument that produces sound in this way is part of the brass family. There are two ways to change pitch in a brass instrument. The first way is to make the tubing of the instrument shorter or longer. Valves redirect the air to shorter or longer routes to make the pitch go up or down.