This article didn't specify, but this one states that it is K.R.Y only

Hallyu star, Super Junior will be singing the theme song to Mnet’s national audition program “Super Star K3.”

According to an interview with a rep on April 5, Super Junior whose management company is SM Entertainment will sing the theme song of “Super Star K3” slated to air in September.

“Super Star K” which first aired 3 years ago made numerous records as a cable program with having over 700,000 applicants and exceeding the rating of 20 percent. Thus, Mnet thinks of the program as vital to its company.

This year, the program is expected to expand its audition stage to Asia, which makes Mnet’s decision to choose hallyu star Super Junior to sing the theme song more meaningful.

This decision is expected to develop more intimate relationship between Mnet and SM Entertainment who conflicted with each since the end of 2008 and reconciled at the beginning of this year.

The relationship between these two was reconciled when TVXQ’s new song “Why” was first released on Mnet.com in past January. Later, TVXQ appeared on “M Countdown,” Mnet’s music ranking program which further improved the relationship.

Meanwhile, “Super Star K3” has accepted application for auditions since March 10. Currently, there are 1,013,000 applicants, signaling the continuation of fever season 2 had.

Source: Starnews
Translated by Minnie @ SUJUISM.BLOGSPOT.COM