He recorded two out of the 10 songs on Super Junior's upcoming 8th album 'Play'. The songs he participated in are "Girlfriend" and "Too Late", which he recorded before he enlisted last May.
"Girlfriend" is a trendy, fresh medium tempo song with a synth sound. "Too Late" has an emotional piano melody and a strong drum sound in the latter half of the song.
Their upcoming album will be released on November 6!