Yeah I seen some of the movie but low quality and Chinese dub ( waiting for further update ) saw her elder sister took care of her since the movie first scene I think is in something about theater they both really young
The easiest way to tell the sisters apart are the hands where they hold the mic when they sing. Anita always holds it with the left hand, Ann with the right.
Thanks for sharing. I didn't know Anita had a duet with her sister in a concert. It is obvious that Anita was a superstar and her sister wasn't. I don't know what you guys call it. Regardless the singing tecnhique, it was the penetrating power of the voice that made the huge difference. I wouldn't think Anita's sister singing that song along would make me sit tight to hear the whole song.
Similarly, Sam Hui's late brother Ricky sang reasonably well too and he was also helping the songs compositions. But he never was as successful as Sam as a singer, partially because he was not as handsome.