The FEI also does not allow the Dr. Bristol. Both Dressage and Eventing disciplines allow the Dr Bristol in our U.S. national competitions My suggestion is that for USEF National Eventing Competitions we accept the same bits that USEF National Dressage competitions do in the interest of keeping it simple.
Percussion Instruments. Bass Drum - The bass drum is a percussion instrument and is the lowest and largest member of the drum family. Bass drums are used in orchestral music as well as marching bands. Cymbals - Percussions are music instruments that are either struck, shaken or scraped and may or may not have pitch. Cymbals are a perfect example of a non-pitched percussion instrument. The type that is used in marching bands is called crash cymbals.
The Prussian Army helped make the Tuba popular. Their marching band directors liked the big, bold sound the tuba makes. After the Prussians started using the tuba other countries started making their own tubas. Tubas come in lots of different shapes and names like the Bombardon, Flugelhorn, and Helicon, but now it is most commonly called the Tuba. Tubas were originally designed to be played while marching instead of while sitting. To begin with the player held the Tuba on his shoulder.