In the show named SSE (Shik Shin Expedition) Karam and InJun from The Boss were guests. The hosts are: Jeon Jun-ha (the man), Lee Pa Ni (the girl with bow on her hair) , and Kim Shin-Young ( the chubby funny girl who is Korean comedian; gag-show artist, MC and DJ and she is my favourite  Korean female comedian female :D ) 

Here i post a cut of the moment where Karam sings and he fails, but generally he sings good . 

I sadly do not know the song he sings -/-

credit: goes to the rightful owner of the video