The original tune of the song is E flat, and the beat is 2/4 beat. The rhythm of the song adopts the form of "strong → weak → strong → weak". For the sustain lines appearing in notation, if they are the same sound, they can be played according to the beat, and there is no need to play them again; If two or more different sounds are connected together, which is also called a smooth line, it is required to sing (play) coherently and smoothly.

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"Don't Forget Class Bitterness" is a song released in 2005, with China stars as the lead singer and included in the album "Songs of the Cultural Revolution No.4-Revolutionary Songs". This song "Don't Forget Class Bitterness" spread to every city and village in China in the 1960s and 1970s, and people who came from that era are still unforgettable.

I remember the popular "recalling bitter experience and thinking sweet" movement at that time, calling on people never to forget class struggle. Generally, old workers and poor middle peasants are invited to experience "the bitterness of the old society and the sweetness of the new society" and tell everyone "don't forget the bitterness of the class, remember the blood and tears". "Don't forget the class bitterness" sings the voice of "don't forget the class bitterness, remember the blood and tears".