[2011-01-04/RADIO] Sungmin, Donghae, Ryeowook and Kyuhyun guesting on Kiss the Radio. Kyuhyun sings Kim Kwang-jin's Letter (a song that Ryeowook has sung before on 1000 Song Challenge) but changes the lyrics, adding "Leeteuk", "Eunhyuk" and "Kim Ryeowook" into the song. He seems to keep looking in Wook's direction while he was singing. After he finishes the song, Kyu explains that the lyric "him gyeo woon" sounds like "Kim Ryeo Wook" and since Wook was there, he changed it. I love Wook's reaction as Kyu was explaining. Kyu did not explain why he changed "saram" to "Leeteuk" and "keudae" to "Eunhyuk", which don't sound alike in the same way as "him gyeo un" and "Kim Ryeowook". Side note. Immediately after Kyu finished the song, Teuk read a message from a listener saying Kyu is the best main vocal in SJ. Teuk (teasingly, I suspect) asked Ryeowook for his opinion and Wook agreed.