Passe, passe, passera, la dernière restera
Why is it "la"? "Le passant" is male according to dictionaries.
Will "le dernièr restera" make significant different song?
I mean song "Les passants" by Zaz.
But she is probably quoted this child song.
Ok, so i just listened this song, the subject isnst "un passant". Because according to me, there isnt sens about the fact the last will stay.
This song let your interpretation work. Mine is, "la" means "seconde" (second, time). We have a lot of vocabulary about "time". Time is passing very fastly. And you see the time passing, but what is remaining is only the last second.