The difference between metal and every other genre is that more mystery surrounds its players. You don't know which member likes pizza or which one's favourite author is Stephen King. So when one of metal's most interesting and frankly cool bands puts out a huge, messy biographical/personal history feature as half of its new DVD, I gotta say I find it a tad confusing. I don't think anyone gives a shit that the guitar player used to have crazy dreads or that two of the members can smoke cigarettes through their noses. It just doesn't make for interesting viewing. In fact, between the few semi-interesting and relevant interviews about the band's formation, there's essentially a whole lot of nothing. On its own, this would be maddening. Fortunately, someone thought to compiled a wealth of live performances dating back six or so years, chronicling Mastodon's transformation from mathy metal outfit to epic, Moby Dick-sized tour-de-force. Anyone with even a passing interest in the band can find something of value in the generous 28 songs recorded live in small clubs and huge outdoor stadiums, and three sorta mediocre music videos. And even though the sound and film quality vary greatly, the live footage allows you to understand why these guys might be one of the best things to happen to heavy music in ages.