I think it looks great already! Maybe color in the Bs.
Answer:
cello, euphonium, double bass, bass guitar, bassoon, contrabassoon, trombone, baritone horn, tuba and timpani
Explanation:
These are the main bass clef instruments.
Common change is around all environments, from pretators, prey, food supply, and many more simple things. But change realy never happens unless its is forced. Natural selection