▁Stre pt om yc in , ▁which ▁improved ▁his ▁condition . ▁In ▁ 1 9 5 4 , ▁K ake hash i ▁opened ▁the ▁K ake hash i ▁Radio ▁elect rical ▁app liance ▁store . ▁In ▁his ▁spare ▁time , ▁he ▁rep a ired ▁electronic ▁org ans ▁and ▁created ▁prototype ▁org ans ▁throughout ▁the ▁ 1 9 5 0 s . ▁ ▁At ▁ 2 8 , ▁he ▁decided ▁to ▁dev ote ▁himself ▁to ▁music ▁and ▁purs uit ▁of ▁the ▁ideal ▁electronic ▁musical ▁instrument . ▁K ake hash i ▁had ▁no ▁musical ▁training , ▁and ▁wanted ▁musical ▁instruments ▁to ▁be ▁accessible ▁for ▁profession als ▁as ▁well ▁as ▁am ateurs ▁like ▁himself . ▁He ▁also ▁wanted ▁them ▁to ▁be ▁in exp ensive , ▁intuit ive , ▁small , ▁and ▁simple . ▁He ▁constructed ▁his ▁first ▁ 4 9 - key ▁mon oph onic ▁organ ▁in ▁ 1 9 5 9 , ▁specifically ▁designed ▁to ▁be ▁play able ▁by ▁anyone , ▁with ▁no ▁musical ▁skill ▁necessary . ▁The ▁focus ▁on ▁mini atur ization , ▁afford ability ▁and ▁simplicity ▁later ▁became ▁fundamental ▁to ▁product ▁development ▁at ▁Roland . ▁ ▁A ce ▁T one ▁ ▁In ▁ 1 9 6 0 , ▁K ake hash i ▁founded ▁A ce ▁Electron ic ▁Indust ries ▁Inc . ▁In ▁ 1 9 6 4 , ▁he ▁developed ▁the ▁first ▁fully ▁trans istor ized ▁electronic ▁drum ▁instrument , ▁the ▁R 1 ▁Rh ythm ▁A ce , ▁which ▁was ▁exhib ited ▁at ▁Summer ▁N AM M ▁ 1 9 6 4 .