Complex sentence: In 2004, after releasing and selling over 250,000 copies of their second full-length album, "Sea of Faces", Kutless would go on their first headlining tour, X 2004.
Split into simpler sentences: In 2004, Kutless released their second full-length album "Sea of Faces". After selling over 250,000 copies of that album,, Kutless would go on their first headlining tour, X 2004.