You're not supposed to copy this piece because it's supposed to be only performed in the Sistine Chapel.

人们不允许复制那首乐曲,因为它应该只在西斯廷教堂里演奏

耶鲁公开课 - 聆听音乐课程节选

We're actually making a legitimate copy with this version of the program so I don't have this bug in anymore.

我们使用这个程序版本,做了一个合法的拷贝,这样我就没有这个bug了。

哈佛公开课 - 计算机科学课程节选