I'm one of those people that believes a concert is more about the sound than it is about the video.  Sure, I like seeing my favorite artists, but I much rather hear them.  There are a whole bunch of concert videos with questionable picture quality that can still benefit greatly from the blu-ray format.  Alchemy live is a perfect example of what I've been saying for a while now.  And finally, a record company gets it.  This is the release that audiophiles have been wanting for years.  Yes, some of these older concerts have low resolution video, a by-product of the times there were recorded.  So while the video doesn't make a case for being put on blu-ray, the audio does.  And that's what delights me as an audiophile.  Blu-ray takes up where DVD-Audio and SACD failed.  Now we can have high resolution multi-channel audio.