"Single String Exercise" was created in January 1932, shortly after the "September 18th Incident", when the Chinese nation was at the most dangerous moment. Mr. Liu Tianhua was very worried about the future of the motherland, so he wrote this piece of music, It's called "Worry". Because they are all played with inner strings, they are named "Solo String Exercise", which further enriches the playing techniques of Erhu.
The piece consists of three sections and an epilogue. The first passage: The speed is slow, the melody is coherent, internal, and the tension is great, showing the author facing the broken mountains and rivers of the motherland, with a solemn expression and a very heavy heart. The second passage: From the weak on the fourth beat of the sixteenth bar, the tempo turns to Andante, the emotions are more excited, the desire to rise up is shown, and the belief in struggle is very firm. The third passage: The second half of the second beat of the thirty-second bar is weak, and the music is relatively brisk, showing the short-lived optimism that flashed in the author's consciousness, but it is still unacceptable in the end. Freed from worries and boredom. Epilogue: From the fifty-sixth section, the mood gradually tends to be empty from irritability, which shows that the author feels powerless to mend the sky in the face of unresolvable contradictions, resulting in a sense of emptiness. Finally, the music gradually slows down and weakens, the sound becomes more and more ethereal, and the feeling is more and more distant, and the whole song ends in "Silence is better than sound at this time".