Yunho (U-KNOW) of TVXQ is back as a solo artist for SM STATION. The track “Drop” is produced by popular SM Producer, Yoo Young Jin. SM Entertainment says, U-KNOW’s STATION track “DROP” has been released. “DROP” is an SMP genre song produced by YOO, YOUNG JIN. The song’s lyrics urge the ones who live under corruption and falsehood to break…