In Red Velvet Wendy and Seulgi‘s behind the scenes footage for recording “Best Friend”, Wendy revealed that her parents couldn’t tell their voices apart when they first debuted.

Screen Shot 2021-04-13 at 5.11.58 PM

Turns out, Seulgi’s dad was the same way, and he still can’t tell their voices apart to this day!

What can we say? They’re both incredible vocalists!