David Sun:

Whatever song is chosen in the remake, the scriptwriter must provide a good reason. Here is why "Last Dance" is chosen:

Last Dance is the scriptwriter's favorite song from Wu Bai and it was not popular. People don't pay attention to B-side as much, just like how people don't pay attention to CYR, so very fitting to this drama. This is also why the characters can listen to this song right after putting the tape in, since this song is the first song on the B side of the album "The End Of Love".

Refer to:

https://mydramalist.com/discussions/some-day-or-one-day/46677-translated-very-long-has-spoilers-interview-and-other-infos

This really makes things difficult, too many considerations to choose another song with a similar background. Damn never know the song had that kind of meaning