During the 'V' app session with Block B's Park Kyung, who released "Inferiority Complex" today, he called his featured artist G-Friend's Eunha on May 24.

On this day, Park Kyung said, "I did 'Inferiority Complex' with G-Friend's Eunha.  You can tell from listening to it but her voice is really nice and she [sings] well."  He then called her on the phone and asked her how it was after she listened to the guide song.

SEE ALSO: Wendy and Yeri exit SM Entertainment, remain part of Red Velvet

She replied, "I personally sang the guide song lightly and liked it as soon as I heard it, and then was offered the feature, which made me really happy."

Park Kyung said, "The key pitch was really high for 'Inferiority Complex' but she handled it well," and likened her to the breath of G-Friend and a gem while complimenting her good singing.