Super Junior-K.R.Y, established in November 2006, is a trio formed by Kyuhyun, Ryeowook, and Yesung.
The company discovered that these three members developed a particular persona and subsequent fan-base that was separate from the rest of the group. They therefore grouped these three members together to perform particular songs to target a more mature audience. Being amongst the most vocally powerful members of the group, Super Junior-K.R.Y are credited to singing mournful, R&B-style ballads, a style that has proven very popular in recent years although stagnation in the style's development is causing it to lose its once fresh evocative power.
Super Junior-K.R.Y's first official performance was on November 5, 2006 on KBS's Music Bank, performing "The One I Love ."br> Unlike Super Junior's other sub-units, Super Junior-K.R.Y has not officially released a single or album, and only participated in collaboration albums and original soundtracks.