Instrumental Progressive Rock is not for everyone. It's an acquired taste and for many, they won't be able to appreciate the journey. That being said, 'Duck' by The Aristocrats is one worth attempting even if you've been burned before. An intricate, melodic, lead driven album that will take you on a roller coaster of a journey from start to finish. Just be sure to listen to it in surroundings that allow you to digest its complexities in their fullness.