YOU SAID:
'Till one by one they were gone
INTO JAPANESE
「彼らがいなくなっていくまで
BACK INTO ENGLISH
"Until they disappear
INTO JAPANESE
「消えるまで
BACK INTO ENGLISH
"Until it disappears
INTO JAPANESE
「消えるまで
BACK INTO ENGLISH
"Until it disappears
You've done this before, haven't you.