In my opinion, this DVD is a "must have."  It's fascinating, and the extended version even more so (although at times it spends a little too much time just showing the drudgery of the rehearsals that went on before the actual performance).  But the real highlight of this DVD: Justin's performance of  Voices in the Sky.  It didn't make it onto the official Red Rocks DVD, but it is one of the most beautiful renditions of Voices in the Sky that I have ever heard!