Complex sentence: ProjeKct Six is a side-project of the music band King Crimson, part of the long running ProjeKct series which serves as research and development avenue for the more "mainstream" King Crimson group.
Split into simpler sentences: ProjeKct Six is a side-project of the music band King Crimson. Part of the long running ProjeKct series which serves as research and development avenue for the more "mainstream" King Crimson group.