▁M atter " ▁was ▁released ▁as ▁a ▁single ▁and ▁pe aked ▁at ▁# 6 1 , ▁during ▁a ▁chart ▁run ▁of ▁ 7 ▁weeks . ▁" R ock ▁& ▁Roll ▁C raz ies " ▁was ▁released ▁as ▁the ▁second ▁single ▁and ▁pe aked ▁at ▁# 9 2 ▁during ▁a ▁ 3 - week ▁run . ▁By ▁ 1 9 7 4 , ▁it ▁had ▁sold ▁an ▁estimated ▁ 4 0 0 , 0 0 0 ▁copies ▁in ▁the ▁US , ▁which ▁is ▁the ▁equivalent ▁of ▁ 8 0 0 , 0 0 0 ▁as ▁the ▁album ▁is ▁a ▁double . ▁ ▁Re ception ▁ ▁Man ass as ▁marked ▁a ▁critical ▁com eb ack ▁for ▁St ills , ▁with ▁All music ▁calling ▁it ▁a ▁" sp raw ling ▁master pie ce " ▁and ▁Rol ling ▁Stone ▁saying ▁it ▁was ▁" re ass uring ▁to ▁know ▁that ▁St ills ▁has ▁some ▁good ▁music ▁still ▁inside ▁him . ▁Most ▁of ▁it ▁has ▁a ▁substantial , ▁honest ▁sound ▁found ▁on ▁too ▁few ▁records ▁these ▁days . ▁All ▁the ▁sounds ▁you ▁hear ▁come ▁from ▁the ▁seven ▁group ▁members ". ▁Chris ▁Hill man ▁was ▁sing led ▁out ▁as ▁an ▁" import ance ▁in ▁the ▁success ▁of ▁Man ass as ▁and ▁in ▁the ▁com eb ack ▁of ▁St ills , ▁he ▁can ' t ▁be ▁over - str essed ▁[...] ▁He ' s ▁a ▁master ful ▁music ian ▁whether ▁he ' s ▁playing ▁bass , ▁guitar , ▁or ▁mand olin , ▁and ▁his ▁boy ish ly ▁pure , ▁un color