Complex sentence: While future albums such as Edge of Sanity's Crimson II had been almost entirely Swanö's work, to date, this is his only entirely solo work: he played all instruments and recorded the album himself in his home studio.
Split into simpler sentences: While future albums such as Edge of Sanity's Crimson II have been almost entirely Swanö's work, to date, this is his only entirely solo work. He played all instruments and recorded the album himself in his home studio.