5 5 ▁ ▁Guillaume ▁Tell ▁was ▁well ▁received . ▁The ▁or chestra ▁and ▁sing ers ▁gathered ▁outside ▁Ross ini ' s ▁house ▁after ▁the ▁premi ere ▁and ▁performed ▁the ▁r ous ing ▁finale ▁to ▁the ▁second ▁act ▁in ▁his ▁honour . ▁The ▁newspaper ▁Le ▁Glo be ▁commented ▁that ▁a ▁new ▁era ▁of ▁music ▁had ▁begun . ▁Ga et ano ▁Don iz etti ▁remarked ▁that ▁the ▁first ▁and ▁last ▁acts ▁of ▁the ▁opera ▁were ▁written ▁by ▁Ross ini , ▁but ▁the ▁middle ▁act ▁was ▁written ▁by ▁God . ▁The ▁work ▁was ▁an ▁und ou bt ed ▁success , ▁without ▁being ▁a ▁sm ash ▁hit ; ▁the ▁public ▁took ▁some ▁time ▁in ▁getting ▁to ▁g ri ps ▁with ▁it , ▁and ▁some ▁sing ers ▁found ▁it ▁too ▁demand ing . ▁It ▁non eth eless ▁was ▁produced ▁abroad ▁within ▁months ▁of ▁the ▁premi ere , ▁and ▁there ▁was ▁no ▁susp icion ▁that ▁it ▁would ▁be ▁the ▁composer ' s ▁last ▁opera . ▁▁▁ ▁J oint ly ▁with ▁Sem ir am ide , ▁Guillaume ▁Tell ▁is ▁Ross ini ' s ▁longest ▁opera , ▁at ▁three ▁hours ▁and ▁forty - five ▁minutes , ▁and ▁the ▁effort ▁of ▁compos ing ▁it ▁left ▁him ▁exha usted . ▁Although ▁within ▁a ▁year ▁he ▁was ▁planning ▁an ▁oper atic ▁treatment ▁of ▁the ▁Fa ust ▁story , ▁events ▁and ▁ill ▁health ▁over to ok ▁him . ▁After ▁the ▁opening ▁of ▁Guillaume ▁Tell ▁the ▁Ross in is ▁had ▁left ▁Paris ▁and ▁were ▁stay ing ▁in ▁Cast en aso . ▁Within ▁a ▁year ▁events ▁in