Cronian is a side project by Vintersorg (the man) and Øystein G. Brun, both of Borknagar. Cronian is extreme progressive metal that sounds almost like Borknagar gone arctic. The music sounds very icy, as was the intent, and has an excellent mood to it. When I bought the CD, it came with a sticker on the front that said "A challenging personal journey of the soul awaits you!" See for yourself. This is a must for any big fan of Borknagar or Vintersorg (both the guy and the band).