Complex sentence: TVXQ won all three of their nominations at the 16th Seoul Music Awards, and at the 21 Golden Disk Awards, "" O "-Jung.Ban.Hap" won Album of the Year, the ceremony's grand prize.
Split into simpler sentences: TVXQ won all three of their nominations at the 16th Seoul Music Awards. At the 21 Golden Disk Awards, "" O "-Jung.Ban.Hap" won Album of the Year, the ceremony's grand prize.