Singer, Sung Si Kyung, confessed he had a drunk kiss with a top actress.

On SBS 'Strong Heart' 'All Singers' special 2nd episode that will be on air on December 27th, Sung Si Kyung started "It's been a long time, but I would like to say sorry to a actress"

Sung Si Kyung first explained his situation to take a kiss scene after drinking excessively, and adds "Must have smelled strong alcohol"

The reason Sung Si Kyung drank excessively right before a kiss scene, how the actress reacted will be reveiled on TV.

Meanwhile, Sung Si Kyung, Kim Yun Ah and Lee Sun Kyu in Ja Woo Rim, Kim Jo Han, Nicole and Kang Ji Young in KARA, Kim Hye Sun, Byun Woo Min, Lee Ye Rin, Woo Hyun in Infinite will be seen on 'Strong Heart'