Finally went to see the Einstein production yesterday. It more than exceeded my expectations--this one would definitely make my short list of favorite performances/concerts. I can't believe how lucky I was to have seen the last American performance of this particular revival of 'Einstein.' It's very hard to explain how intense and immersive the 4-1/2 hour performance was. I've known Glass' music from 'Einstein' since it was released in the late 70s, but seeing and experiencing it live with the theatrical and dance-related components was much meaningful and satisfying. At its the core, it's a very emotional and visually/musically beautiful piece that throws you off-balance from the beginning and keeps you there, in seemingly suspended time, swimming among parameciums, electrons and abstract mathematical shapes. Each visual element (from the massive sets, to the "actors," the choir, the two main speakers, and Lucinda Child's kinetic dancers), coupled with Glass' finely-tuned ensemble, seemed to trigger subconscious associations that could be keenly felt but not adequately described.
I highly recommend this if it ever comes around again. I thought Robert Wilson's contributions were particularly striking and memorable.
Here is an interesting blog review from a NY musician who knows one of the choir members:http://briancarpenter.net/content/2012/09/einstein-on-the-beach.html
BTW, Julio, Glass and Close are long-time friends. The "Portrait" film includes a visit by Glass to Close's studio.