Portland, OR instrumental band Grails share a drummer with Om (Emil Amos, also of Holy Sons and Lilacs & Champagne), but there's a shared sensibility, too: Both bands deal in complex yet meditative explorations of sounds spanning psychedelia, ambient, doom, Eastern music, prog, and beyond. Grails' forthcoming release, the split-LP Black Tar Prophecies Volume 5, is the latest installment of ...