▁Who ▁You ▁Are ", ▁was ▁released ▁in ▁September ▁ 1 9 7 0 , ▁but ▁was ▁also ▁a ▁commercial ▁failure , ▁as ▁was ▁Play ▁It ▁L oud ▁when ▁it ▁was ▁released ▁in ▁November . ▁Le ad ▁vocal ist ▁N od dy ▁H older , ▁in ▁his ▁ 1 9 9 9 ▁bi ography , ▁re called ▁of ▁the ▁song ' s ▁failure : ▁" When ▁it ▁didn ' t ▁make ▁the ▁charts , ▁fr ustration ▁started ▁to ▁set ▁in . ▁We ▁couldn ' t ▁understand ▁why ▁we ▁wer en ' t ▁more ▁popular ▁by ▁then . ▁We ▁had ▁been ▁with ▁Ch as ▁for ▁two ▁years , ▁s logging ▁our ▁g uts ▁out ▁and ▁still ▁we ▁hadn ' t ▁had ▁a ▁hit ." ▁Spe aking ▁to ▁Good times ▁Magazine ▁in ▁ 2 0 1 5 , ▁bass ist ▁Jim ▁Le a ▁re called : ▁" We ▁had ▁no ▁hits . ▁Songs ▁such ▁as ▁" K now ▁Who ▁You ▁Are " ▁or ▁" Shape ▁of ▁Things ▁to ▁Come " ▁were ▁played ▁on ▁the ▁radio ▁only ▁very ▁inf re qu ently ." ▁After wards , ▁the ▁band ▁dropped ▁their ▁skin head ▁image ▁and ▁would ▁achieve ▁their ▁commercial ▁break through ▁with ▁their ▁mid - 1 9 7 1 ▁single ▁" Get ▁Down ▁and ▁Get ▁with ▁It ". ▁ ▁" K now ▁Who ▁You ▁Are " ▁developed ▁from ▁the ▁band ' s ▁ 1 9 6 9 ▁track ▁" Gen esis ", ▁which ▁was ▁an ▁instrument al ▁written ▁by ▁the ▁band ▁and ▁released ▁as ▁a ▁single ▁from ▁Begin