Wheesung (Choi Wheesung) debuted with boy group A4 in 1999 and as a solo artist with YG Entertainment in 2000. Although his roots are in rock, he is known as a solid R&B artist. Wheesung also uses the stage name Realslow, and named his company such when he started it in 2017. 

“Girls” is from Wheesung’s 2010 CD Vocolate (an almagam of the words “voice” and “chocolate”). This album also highlights the continuing hallmark of Korean music artists working with African-American music producers: Vocolate features collaborations with Rodney “DarkChild” Jerkins and Ne-Yo. I was originally introduced to this song via Jonghyun (he was a fan of and worked with Wheesung). “Girls” made a recent showing on my YouTube random play. Add it to your work-out list to keep you going through those next-to-last rotation squats or that final treadmill level-5 incline run.

Source

Wheesung-Topic. “Girls.” YouTube. 14 July 2014. https://www.youtube.com/watch?v=Gte–D_eLS0 (Accessed 9 Mar 2020).