I see we're talking about music concerts. I was a die hard music fan (and still am) even before I picked this video hobby. And I am always on the look-out for new quality music concerts. I can recommend the following as being 'reference quality' for video and audio:
1) John Mayer: Where the Light Is - Live in Los Angeles
(blues/rock/pop) - you must know John Mayer. If not, you should check him out! Tremendous guitar player and singer. Just watch:
Many dark scenes here so it will look great on JVCs.
2) Jackie Evancho - Dream With Me in Concert
(vocal/orchestral) - when I first saw this I was blown away. By her voice, by beautiful songs, by sound and video. I have yet to hear a more pure, vibrant and touching voice. I re-watch it quite frequently. I think it will be hard for her to top what she did here. A must have.
3) Dave Matthews & Tim Reynolds: Live at Radio City Music Hall
(rock) - while not quite into this kind of music I realize the fact that it might be the best looking and sounding music concert to date. If you still don't have it in your collection go and grab one. Just to impress people if not for anything else. You might look up an example on YouTube.
4) Sting Live In Berlin
(Sting) - my favourite concert of Sting is also the best looking one. It's quite recent and every technical part about it is made to highest standards (as always with Sting). But it's the musical part that grabs me. Also, her back-vocalist is so pretty here.
5) Macross Frontier Galaxy Tour Final in Budokan
(J-pop/J-rock/orchestral) - I'm sorry I just had to include this one. If you're unfamiliar with j-pop this mightn't allure you but still one have to admit that Japanese are great at making top-tier shows. And filming them. The sheer scale of Budokan arena, spectator's involvement, genial music of Yoko Kanno (yes, I believe she is a genius composer) and perfect performance by musicians make this 3-hour concert an unforgettable experience. It's a great production and it's mixed great. Just not for everyone. Here's a couple examples on YouTube:
The complexity of musical arrangements and number of musicians involved!.. And the fact that it's performed live is mind-blowing.