[MV] XIA(준수) _ Yesterday(꼭 어제)
"Yesterday", the title song for XIA's new mini-album, is composed and worded by Lucia, a beloved singer songwriter known for her sentimental songs. On top of the mellow music, XIA's unique, rich voice flows, turning "Yesterday" into an unprecedented ballad number. XIA has gained much love from his fans for his participation on several OST and ballad tracks. "Yesterday" is the perfect song for the season, XIA's first ballad to be chosen as the title song.