Documentarian and long time fan and admirer of the Grateful Dead Amir Bar-Lev knows that the idea of a four hour documentary chronicling the lucrative, beloved, and artistically forward American rock band sounds daunting and overwhelming to the uninitiated. The culture that surrounded the Grateful Dead at the peak of their popularity – as well as the psychedelic, bluesy tunes they cranked out every night on their seemingly never ending tours – are like doctorate level classes in musical theory, appreciation, and history. There might not have been a more truly and uniquely American rock band than the Grateful Dead, but “getting into” their extensive catalogue comes with a huge learning curve.