My brass band

This past April I transferred to an elementary school in Sapporo.
Also, I started to direct of a brass band of the school. I've become devoted to the brass band.
Last month, we performed a peace in a local competition in Sapporo area and won the first place. Now we are preparing for another competition in Hokkaido that takes place next Sunday.
This time we are aspiring to play the peace more fluently.
Therefore I wrote a letter in English to a composer regarding the peace last month. I wanted to get an advice on how to express the music from him.