Complex sentence: While "American Child" was climbing the charts, Arista tested another song written by Vassar, entitled "This Is God"; this song was so well-received by test audiences that "American Child" was recalled and re-released in early 2003.
Split into simpler sentences: While "American Child" was climbing the charts, Arista tested another song written by Vassar, entitled "This Is God". This song was so well-received by test audiences that "American Child" was recalled and re-released in early 2003.