Tiësto’s iconic ISOS series has been resurrected by Gabriel & Dresden, Andy Moor, & Markus Schulz in the most powerful of fashions [Album Review] ISOS has been revived in a powerful fashion by Markus Schulz, Gabriel & Dresden, and Andy Moor. Related Posts: Sultan + Shepard recast Gabriel & Dresden’s ‘Falling Forward’ ZAXX makes a welcomed return to Tiësto’s Musical Freedom with ‘Psychoactive’