Complex sentence: "Neon Knights" was the last song written by the band for the "Heaven and Hell" album; it was quickly written and recorded at Studio Ferber in Paris simply to fill time on the album's first side.
Split into simpler sentences: Neon Knights was the last song written by the band for the "Heaven and Hell" album. It was quickly written and recorded at Studio Ferber in Paris simply to fill time on the album's first side.