This is a piano music work with a strong sense of substitution. The low Prelude leads to the solemnity of the trombone. The whole is quiet and magnificent, and the whole music is unique.
From the quiet and low piano at the beginning to the tense and dramatic part at the back, both the tension of the piano and the grandeur of the trombone, it is especially suitable for the bridge section with negative / quiet / grand / solemn mood and atmosphere.