Idol choreography can be tough to perfect, and it looks like ballad singers Baek Ji Young and Song Yu Vin (Song Yoo Bin) got a taste of how hard it can be!

On April 8, Music Work's official SNS uploaded the above collage of photos and video of Baek Ji Young, Song Yu Vin, and a manager attempting the dance moves of Red Velvet's "Ice Cream Cake". You can see Baek Ji Young start laughing and Song Yu Vin in a pink sweater, very intently trying to learn the moves.

The caption said, "Not Wendy but WenJi, not Seulgi but Solgit, not Yeri but Yori's 'Ice Cream Cake' will be revealed! hehe. This is Wenji, Solgit (#SongYuVin), and Yori's (#BaekJiYoung) dance practice video for #RedVelvet's 'Ice Cream Cake'! #Wendy #Seulgi #Yeri #Joy #Irene Sorry. Don't forget to watch 'Garosugil at Dawn' on 'Show! Champion' at 6pm KST!"

They filmed the video in the waiting room of MBC's 'Show! Music Champion' on April 8. Baek Ji Young is said to have been a fan of Red Velvet and talked to Song Yu Vin about the group.

SEE ALSO: Song Jae Rim's former manager opens up about late actor

Baek Ji Young and Song Yu Vin are currently promoting their duet song "Garosugil at Dawn".

How do you think they did with their attempt at the "Ice Cream Cake" dance?