What is the meaning of this sentence? Is this referring to a chorus as in a group of people who sing, or a refrain in a song?
פזמון or פיזמון is the part of the song that we sing repeatedly. I'm not sure about the English word for it, but a song contains, for example: House A פזמון House B פזמון House C פזמון
The houses's words are different, but the פזמון are all the same.