"(Love Is) Thicker Than Water" is a song performed by Andy Gibb, released in 1977, it was his second single that topped the US Billboard Hot 100. It was mainly written by Barry Gibb, with help from Andy Gibb. The B-side of this song was "Words and Music" in the US, but "Flowing Rivers" in the UK. It became a gold record. Billboard magazine describes the song as "a midtempo ballad that changes pace from a lushly romantic and soft [Andy] Gibb vocal to an uptempo instrumental drive. Plenty of melody and another catchy hook".