On February 28, Soyu and JungGiGo appeared on KBS 2TV's 'Yoo Hee Yeol's Sketchbook' and talked about how it was different promoting together as a duo than promoting normally with Soyu in SISTAR and JungGiGo by himself or with other male singers.

Yoo Hee Yeol asked JungGiGo, "How is it working with a female singer after working with only male singers?" �JungGiGo said, "It's nice. �My friends are so jealous. �I've been promoting for a long time, but my friends had shown any interest before."

He continued, "Then reports went out that I was working with Soyu and even friends from when I was way younger suddenly texted me. �If it had been very long since you texted someone, you usually start with 'Hey, it's been a while,' or, 'How have you been?' but they just straight-out asked, 'Hey, is SISTAR pretty?' �I got like five of those texts a day."

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Yoo Hee Yeol could completely understand, saying his friends would never ask him about his music but would ask whether he saw Girls' Generation. �He also asked Soyu how promoting in such collaborations was different from promoting with SISTAR.

She said, "It's fun. �I can show an individual color that I can't show in SISTAR."

The duo also performed their hit song "Some" live, so check it out above!