week ▁season , ▁plus ▁a ▁seven - week ▁summer ▁session , ▁a ▁respect able ▁income ▁for ▁the ▁Great ▁De pression , ▁especially ▁for ▁a ▁te en ager . ▁S op kin ▁spent ▁eight ▁years ▁with ▁the ▁Chicago ▁Sym phony ▁Orchestra . ▁ ▁He ▁left ▁in ▁sym phony ▁in ▁ 1 9 4 1 ▁to ▁form ▁the ▁Fine ▁Arts ▁Quart et ▁together ▁with ▁viol in ist ▁Leonard ▁S ork in , ▁who ▁had ▁also ▁performed ▁with ▁the ▁Chicago ▁Sym phony . ▁S op kin ▁served ▁together ▁with ▁other ▁mus icians ▁in ▁the ▁United ▁States ▁Army ▁Air ▁Forces ▁during ▁World ▁War ▁II ▁in ▁Or lando , ▁Florida . ▁S op kin ▁and ▁other ▁mus icians ▁made ▁records ▁of ▁their ▁performances ▁that ▁were ▁sold ▁at ▁the ▁P X . ▁ ▁After ▁returning ▁from ▁military ▁service , ▁the ▁Fine ▁Arts ▁Quart et ▁was ▁rev ived , ▁operating ▁in ▁Chicago ▁under ▁the ▁aus p ices ▁of ▁the ▁American ▁Broadcast ing ▁Company . ▁The ▁members ▁of ▁the ▁quart et ▁joined ▁the ▁music ▁fac ulty ▁of ▁the ▁University ▁of ▁Wisconsin – Mil w au kee ▁in ▁ 1 9 6 4 , ▁and ▁the ▁quart et ▁re located ▁there . ▁ ▁S op kin ▁left ▁the ▁Fine ▁Arts ▁Quart et ▁in ▁ 1 9 7 9 ▁following ▁a ▁hand ▁injury ▁and ▁a ▁det ached ▁ret ina , ▁but ▁continued ▁to ▁make ▁occas ional ▁guest ▁appearances ▁with ▁the ▁group . ▁Vi olin ist ▁Abr am ▁Lo ft , ▁who ▁played ▁with ▁the ▁quart et ▁from ▁ 1 9 5 4 ▁until