Red Velvet's Joy decided to greet viewers of KBS2's 'Yoo Hee Yeol's Sketchbook' in light of the release of her solo debut mini album, 'Hello'!

For this guest appearance, Joy performed her title track "Hello" (originally by Park Hye Kyung), as well as "Day By Day" (originally by As One), plus a short cover of Beyonce's "Love On Top" - a special song she sang during her trainee days!

After sitting down to talk about her special solo album 'Hello' with MC Yoo Hee Yeol, Joy named each of the 6 tracks that she remade for the album. When she got to introducing the last track from the album, Joy hesitated as she said, "The last one is..! Toy sunbaenim's 'Be There For You'!" MC Yoo Hee Yeol, also well-known by his producer/musician name Toy, responded, "This album has 6 songs. I didn't want to bring this up because I didn't want to seem shallow but... my song is the last one..?"

Hearing this, Joy defended herself by stating, "I think [being the last song] is also very meaningful. The lyrics of that song are very meaningful." However, MC Yoo Hee Yeol didn't seem to want to let it go, as he added on, "All 6 songs charted on the music charts. But for some reason, my song was in last place of the 6 songs. For some reason, all of the songs charted in the order that they are in the album."

MC Yoo Hee Yeol continued to tease Joy as he also remarked, "At first, I was waiting on Joy to call me up about a duet. But while I was waiting for a call, you did a duet with Paul Kim," making everyone laugh.

Check out some more clips of Red Velvet's Joy as a guest on this week's 'Sketchbook', below!