TWICE - DO IT AGAIN Dance Practice 2020 X 2015 Version Comparison 트와이스 - 다시 해줘 2020.03.07 VLIVE. TWICE Tzuyu wasn't in 2020 version because she's in Taiwan. @thanksic on twitter
The only difference between the two videos? Is that ALL THE GIRLS are present, bottom portion of the video. The top portion? -1 Tzuyu, she was visiting her parents in Taiwan that day but SHE WAS, there in spirit!