"Though not all post-metal is instrumental, almost all instrumental metal bands play some variation of post-metal. One could write a riveting dissertation exploring the reasons behind this phenomenon and its implications, if one were inclined towards musical studies and history; alas, I am but a humble observer of such odd patterns and have no definitive answers. Perhaps it is part of how heavily defined by vocals many genres are; perhaps the textured and buildup-heavy nature of post-metal si...