Indianapolis has birthed a number of successful thrash metal bands in recent memory. But there’s a doom element to the scene that’s starting to rumble, too. First it was The Gates of Slumber. Now Apostle of Solitude, whose vocalist Chuck Brown once played drums for Slumber, have emerged with their debut full-length, Sincerest Misery. Their seismic sound recalls Neurosis’ heyday, but with clear vocals and bluesy guitar turns. With thick, growling guitars and cataclysmic drumming, the production is perfect for this type of music — a cavernous cadre that doesn’t sacrifice melody for the sake of the expected heavy atmosphere. The songs are customarily long for this genre, but offer the aural equivalent of enough page-turners to keep it interesting.