Currently there is a battle to see who can take the number 1 spot on music charts.

The battle is between SBS "The Master's Sun" star So Ji Sub and the popular girl group SISTAR, who swept the music charts earlier this year.

Whenever So Ji Sub is in a drama, the OST for that drama rises to the number 1 spot on music charts. SISTAR's Hyorin's OST "Driving Me Crazy" and Yoon Mi Rae's "Touch Love" took the top spot as soon as it was released. Especially to note is Yoon Mi Rae's "Touch Love," which rose straight to the number 1 spot after the September 4 episode that featured So Ji Sub's kiss scene, and has been at number 1 ever since. As of September 13, it is still at number 1 on Melon's chart.

"The Master's Sun" has 2-3 OSTs on the top 10 music charts. On Bugs music charts, "Touch Love," "Driving Me Crazy," and Melody Day's "All About" make up 3 of the top 10 songs.

SISTAR's SoYou and rapper Mad Clown's duet song is also fighting for the number 1 spot. They released their new song "Stupid in Love," which had an all kill on 9 music charts, and is currently battling it out for the number 1 spot against "Touch Love." As of September 13, it is at number 2 on Melon's charts, and number 1 on Mnet and Bugs charts.