Complex sentence: It leads to another Kristek theme, that is intergrowth or penetration of forms, as in "Suite for Biophilic Piano Attacked by Masochistic Tuba" (1995).
Split into simpler sentences: It leads to another Kristek's theme that is intergrowth or penetration of forms. As in "Suite for Biophilic Piano Attacked by Masochistic Tuba" (1995).