The 3 instruments you can choose from in 5th Grade Orchestra are the violin, viola, and cello and bass.The violin is probably the most well-known instrument in the orchestra. It is the smallest and highest sounding instrument in the orchestra. It is held on the shoulder. Violin players can sit or stand to play.The viola looks just like a violin but it is just a little bit bigger and it has a lower, deeper sound. The viola is held the same way as a violin. The viola provides balance in the orchestra between the lower sounding instruments and the violin.The cello is much bigger than the violin or viola. It is played sitting down, held in between the knees. The cello has a low, deep sound but can also make very high sounds.The bass is the largest member of the orchestra. It is played by standing up or sitting on a stool. The bass makes the lowest sound of all the instruments. The bass is a common instrument in both classical music and jazz music.