Hehehe, I didn't saw that earlier, nice footage
Well, when I looked at those metres charts I could think that there are some various riffs put together in one song as it flows
But it's a little madness anyway
So many times I heard about their music that is a music from musicians only for musicians, but IMO DT music is not so complicated as some other bands I know. I don't have problems with learning the metrum of their songs, but I have big problems in learning for example Meshuggah tunes... Both bands I know very well, almost every song by memory, but just Meshuggah is so odd sometimes, DT is just more musical, no doubt about it.