I found the concert to be quite enjoyable; King Crimson is an odd band to prepare for, because they have a tendency to reinvent themselves completely every incarnation. This tour featured a brand new line-up, featuring members from different eras of the band as well as a third drummer and a guitarist/vocalist who has done work with KC side projects. It was aptly titled "The Elements of King Crimson". I'm not too sure if it was supposed to be a "Best Of" reunion tour or not; they played a lot of songs that they haven't played since the 70s, although they seemed to skip any material from the 80s (which, unlike certain bands from their time, wasn't an embarrassing synth-pop period). There were also a couple songs from the 90s as well as two songs from an album called A Scarcity of Miracles that most of the members will involved in.
The band featured:
Robert Fripp: Guitar, keyboards (original member)
Mel Collins: Saxophones, flutes (played with the band in the early 70s)
Tony Levin: Bass guitar, Chapman Stick, upright bass (with the band since the 80s)
Pat Mastelotto: Drums (with the band since the 90s)
Gavin Harrison: Drums (with the band since 2008)
Jakko Jakszyk: Lead vocals, guitar, flute (Part of the 21st Schizoid Band with Mel Collins and some original members of KC, and also did some work with Fripp)
Bill Rieflin: Drums, keyboards (the new guy)
Coming into the concert, you could see the band had an interesting set-up. Three drumkits were placed in front, and behind them was the rest of the band's equipment. Every member had their own little section on the stage with all their instruments surrounding them, and they each had their own element symbol to help identify them. Not a lot of room for them to move around, but I came to hear a concert, not to watch a dance party. There were no projections or screens for you to watch the band from, but the hall was small enough that you could see them in person even from the back.
The concert was very dynamic, as those familiar with the material might expect. Fortunately, the rest of the audience did respect this; during quiet parts, there was a minimal amount of noise to distract from the band. The mix for the concert wasn't that great; the three drummers could be heard clearly, but it was often difficult to make out the rest of the band during louder sections (this is probably why most bands have one drummer). The bass guitar was very bassy... very little mid and high-end to the tone, so it was difficult to clearly hear what Tony Levin was playing.
The band was obviously well-rehearsed; they did tend stick fairly close to the album versions of the songs where they could. Flute/sax was of course added during songs that didn't originally have them, and violin parts were often covered on guitar. I've always been a fan of Mel Collin's work with King Crimson, Camel, and Chris Squire, so I was happy to hear him with the band. Lark's Tongues pt. 1 featured a really cool flute solo in place of violin, and Vrooom sounded great with bari sax. Other than solos, there wasn't much improv; I think it would have been fun to see the band improvise entire pieces like they used to do in the 70s.
I have a feeling most of the audience was only there to hear 21st Century Schizoid Man, which they saved for last. On some songs, it did feel like the applause was premature; as if people thought a song was over when they were just starting a quiet section. Quite a difference from the audiences during KC's first tour in 69; apparently they were unsure if they were supposed to clap at the end of Schizoid Man, or if the song wasn't over. Yeah, I'm pretentious, why do you think I love King Crimson so much?
So if you like listening to rock musicians play complex and ambitious pieces, you would have loved it. Unfortunately this tour is almost over, but if you go to King Crimson, expect to experience it like you would a classical or jazz concert, not a rock and roll concert. Not a lot of moshing, dancing, singing along, or clapping to the beat. This is all about appreciating the performance of music.