2012 album from the three time Grammy winning percussionist and Grateful Dead drummer. With Mysterium Tremendum, Hart is pushing the boundaries of what we know as music, creating a genre of his own. For this new work Hart joined with long time Grateful Dead lyricist Robert Hunter to pen the words for these songs. ''Hunter is a bold visionary writer who knows where I am going with this music,'' says Hart. ''He is indispensable to the weave of this story.''