Metal is meditation. [Yes!] Whether you find a living pulse in its massive vibrations or use it to equalize rage, this music soothes the savage heart with savage sounds. To the outsider, this may seem strange, but this is true from Slayer’s “Angel of Death” to Isis’ “In Fiction.” Mike Scheidt seems to understand this. After 2 1/2 minutes of earth-shaking doom and a riff that could summon animals to revolt on opener “Prepare the Ground,” the YOB guitarist wails, “One hundred thousand/Repetitions/Recite the mantra/Flowers unfold.” Named for a term in the Bhagvad Gita, YOB’s sixth album, Atma, out Aug. 16, is an incredibly spiritual doom metal record that explores the energy of self and its surroundings.