Music Anyone?

Do, re, mi, fa, so, la, ti, do. These are the correct notes. We sing every day in different patterns, But sometimes they change. Not just in various places, rearranged. They go up or down by a half step. These are called sharps or flats. Going sharp or flat on a pitch can be bad unless It is specifically written in the music. I'm in choir, but I also do school musicals. Polar opposite styles. One is blended together with many dynamics, The other lots of vibrato and crescendos, especially in finales. (I'm singing) - MUSIC Slower gets quieter and quieter. It's barely audible. Then BAM!! In your face, but then you get chills from the four part harmonies and you hear that bass