▁Gil m our ▁had ▁called ▁" Theme ▁from ▁an ▁Im ag inary ▁Western ", ▁and ▁the ▁earliest ▁documented ▁live ▁performance ▁was ▁on ▁ 1 7 ▁January ▁ 1 9 7 0 ▁at ▁H ull ▁University . ▁The ▁band ▁felt ▁that ▁the ▁live ▁performances ▁developed ▁the ▁piece ▁into ▁a ▁manage able ▁shape . ▁Rec ording ▁of ▁the ▁track ▁comm enced ▁at ▁Ab bey ▁Road ▁Studios ▁in ▁London , ▁and ▁was ▁somewhat ▁cum bers ome , ▁as ▁it ▁was ▁the ▁first ▁recording ▁to ▁use ▁a ▁new ▁ ▁eight - track ▁one - inch ▁t ape ▁and ▁E MI ▁T G 1 2 3 4 5 ▁trans istor ised ▁mixing ▁console ▁( 8 - track , ▁ 2 0 - m icro phone ▁inputs ) ▁in ▁the ▁studio , ▁and , ▁as ▁a ▁result , ▁E MI ▁ins isted ▁the ▁band ▁were ▁not ▁allowed ▁to ▁do ▁any ▁sp lic ing ▁of ▁the ▁t ape ▁to ▁edit ▁pieces ▁together . ▁Con sequently , ▁band ▁members ▁Roger ▁W aters ▁and ▁Nick ▁Mason ▁had ▁little ▁choice ▁but ▁to ▁play ▁the ▁bass ▁and ▁drums , ▁respectively , ▁for ▁the ▁entire ▁ 2 3 - min ute ▁piece ▁in ▁one ▁sitting . ▁The ▁other ▁instruments ▁the ▁band ▁played ▁were ▁over d ub bed ▁later . ▁Mason ▁re called ▁the ▁final ▁backing ▁track ' s ▁lack ▁of ▁precise ▁time keep ing ▁would ▁cause ▁problems ▁later ▁on . ▁ ▁By ▁March , ▁they ▁had ▁finished ▁recording ▁the ▁track , ▁but ▁felt ▁that ▁it ▁was ▁rather ▁unf oc used ▁and ▁needed ▁something ▁else .