On a recent episode of MBC's "We Got Married' (YongSeo Couple Ep35), CN Blue's Yonghwa whom is also the virtual husband of SNSD's Seohyun revealed that he has been writing a song for his wife. The theme of the song is "Banmal", which is something Seohyun doesnt currently do but had tried "it" before.

Check out a little teaser of Yonghwa's song here!
NOTE* This is not the OFFICIAL teaser, it is just a cut of what Yonghwa "revealed" to Seohyun on "We Got Married".

Original Video: KRDsubs1 via Youtube
Teaser/Cut: mayasakie via Youtube