Here's the preview of CNBlue's Japanese single 'I Don't Know Why'. The song is composed by Jung Yong Hwa himself together with RYO. Yong Hwa also directed the music of this song and if you try to listen to it, it's very CNBlue-ish! You know what i mean.
Listen to the preview below:
credits:
cnbluesoul @ YouTube
credit: myspace/cnbluejp
thanks klaritia for the tips