Our God is who He is, He does not change. You are is a song that describes who God is (I Am). Kennysam has a perfect description of God and decided to worship him with this song.
You are is a song that describes who God really is. Has God done great things for you? Has He ever shown you how Great He is? This is a perfect song to worship Him. Call Him those names that will cause Him to rise from His throne. He is indeed Who He Is.