▁Egypt , ▁in ▁ 1 9 4 4 , ▁was ▁an ▁early ▁work ▁using ▁musique ▁conc r ète – like ▁techniques ▁similar ▁to ▁those ▁developed ▁in ▁Paris ▁during ▁the ▁same ▁period . ▁El - D ab h ▁would ▁later ▁become ▁more ▁famous ▁for ▁his ▁work ▁at ▁the ▁Columbia - Pr inc eton ▁Electron ic ▁Music ▁Center , ▁where ▁in ▁ 1 9 5 9 ▁he ▁composed ▁the ▁influ ential ▁piece ▁Le iy la ▁and ▁the ▁Po et ▁. ▁ ▁US ▁composer ▁John ▁C age ' s ▁assembly ▁of ▁the ▁Williams ▁Mix ▁serves ▁as ▁an ▁example ▁of ▁the ▁rig ors ▁of ▁t ape ▁music . ▁First , ▁C age ▁created ▁a ▁ 1 9 2 - page ▁score . ▁Over ▁the ▁course ▁of ▁a ▁year , ▁ 6 0 0 ▁sounds ▁were ▁assemble d ▁and ▁recorded . ▁C ut ▁t ape ▁segments ▁for ▁each ▁occurrence ▁of ▁each ▁sound ▁were ▁accum ulated ▁on ▁the ▁score . ▁Then ▁the ▁cut ▁segments ▁were ▁sp lic ed ▁to ▁one ▁of ▁eight ▁t apes , ▁work ▁finished ▁on ▁January ▁ 1 6 , ▁ 1 9 5 3 . ▁The ▁premi ere ▁performance ▁( real ization ) ▁of ▁the ▁ 4 ' 1 5 " ▁work ▁was ▁given ▁on ▁March ▁ 2 1 , ▁ 1 9 5 3 ▁at ▁the ▁University ▁of ▁Illinois , ▁U rb ana ▁. ▁ ▁Electron ic ▁music ▁ ▁In ▁C ologne , ▁elektr on ische ▁Musik , ▁pione ered ▁in ▁ 1 9 4 9 – 5 1 ▁by ▁the ▁composer ▁Herbert ▁E