Atheist's sophomore record is what a metal legend is made of. Written with bassist Roger Patterson, who unfortunately never lived to see his work recorded, Unquestionable Presence is classic heavy metal interwoven with jazz and a highly articulated melodic sense to create music of timeless brilliance. Upon its initial release it emerged as the most important technical metal record of its time, and to this day remains a crucial yardstick by which daring, ambitious, and progressive metal records are measured.