Planet X is one of my favorite prog jazz groups; they seem unable to play anything in 4/4 time. There aren't any live videos available of their songs I like the most, but here's a good one from a concert in Sofia, Bulgaria that was recorded for a television special:
httpv://www.youtube.com/watch?v=SN2FYLKQKQ8
Heh, I kept thinking "this reminds me a lot of Dream Theater" while listening to it, which all made sense when I looked them up to find that the founding member was a keyboardist for Dream Theater.
Yeah, I can hear that link, too. Planet X leans more towards jazz and has a more complex sound. And less hair.
You have a broader definition of "jazz" than I do.
make that "progressive jazz"
No thanks, I think I'll pass.
Here's some guy covering the guitar part over my favorite Planet X track, "The Thinking Stone"