who ▁gave ▁him ▁his ▁first ▁Paris ▁appearance ), ▁Sir ▁John ▁Bar bi rol li , ▁Sir ▁Ad rian ▁Bou lt , ▁Fritz ▁Re iner , ▁Sir ▁Henry ▁J . ▁Wood , ▁George ▁Sz ell , ▁Otto ▁K lem per er , ▁Dim it ri ▁Mit rop oul os , ▁and ▁William ▁Stein berg . ▁ ▁In ▁L ening rad ▁he ▁was ▁engaged ▁for ▁a ▁single ▁performance , ▁but ▁his ▁virt u os ity ▁was ▁so ▁impress ive ▁that ▁he ▁was ▁retained ▁for ▁five ▁performances ▁with ▁five ▁complete ▁programs ▁within ▁a ▁week . ▁ ▁In ▁ 1 9 3 5 ▁he ▁won ▁third ▁prize ▁in ▁the ▁first ▁Henry k ▁Wien ia w ski ▁Vi olin ▁Compet ition ▁in ▁Wars aw , ▁Poland ; ▁G in ette ▁Ne ve u ▁took ▁first ▁prize , ▁and ▁David ▁O ist rak h ▁second . ▁ ▁( A ▁short ▁document ary ▁about ▁that ▁historic ▁event ▁can ▁be ▁found ▁at ▁http :// www . w ienia w ski . com / 1 iv c . html .) ▁ ▁In ▁that ▁year ▁he ▁also ▁premier ed ▁a ▁suite ▁that ▁the ▁then - unknown ▁Benjamin ▁Brit ten ▁had ▁written ▁for ▁him ▁and ▁pian ist ▁Betty ▁Hum by , ▁and ▁performed ▁music ▁by ▁Serge i ▁Pro k of iev , ▁with ▁the ▁composer ▁at ▁the ▁piano ▁in ▁Moscow ; ▁and ▁Ralph ▁V aug han ▁Williams ▁conducted ▁his ▁viol in ▁con cer to ▁for ▁him ▁in ▁London . ▁ ▁In ▁ 1 9 3 6 ▁he ▁founded ▁the ▁Tem ian ka ▁Chamber ▁Orchestra