▁of ▁the ▁adv ances ▁in ▁musical ▁form ▁evol ved ▁by ▁Moz art , ▁Hay dn ▁and ▁Be eth oven ; ▁the ▁acc ent ▁is ▁on ▁cant abile ▁mel ody , ▁colour , ▁variation ▁and ▁virt u os ity ▁rather ▁than ▁transform ational ▁development . ▁These ▁qual ities ▁are ▁also ▁evident ▁in ▁Ross ini ' s ▁early ▁oper as , ▁especially ▁his ▁far se ▁( one - act ▁far ces ), ▁rather ▁than ▁his ▁more ▁formal ▁opere ▁serie . ▁G os sett ▁notes ▁that ▁these ▁early ▁works ▁were ▁written ▁at ▁a ▁time ▁when ▁"[ t ] he ▁depos ited ▁mant les ▁of ▁C imar osa ▁and ▁P ais iel lo ▁were ▁un filled " ▁– ▁these ▁were ▁Ross ini ' s ▁first , ▁and ▁increasing ly ▁appreciated , ▁steps ▁in ▁trying ▁them ▁on . ▁The ▁Teatro ▁San ▁Mo is è ▁in ▁Ven ice , ▁where ▁his ▁far se ▁were ▁first ▁performed , ▁and ▁the ▁La ▁Scala ▁Theatre ▁of ▁Milan ▁which ▁premier ed ▁his ▁two - act ▁opera ▁La ▁p iet ra ▁del ▁par ag one ▁( 1 8 1 2 ), ▁were ▁seeking ▁works ▁in ▁that ▁tradition ; ▁G os sett ▁notes ▁that ▁in ▁these ▁oper as ▁" R oss ini ' s ▁musical ▁person ality ▁began ▁to ▁take ▁shape   ... ▁many ▁elements ▁emer ge ▁that ▁remain ▁throughout ▁his ▁career " ▁including ▁"[ a ] ▁love ▁of ▁she er ▁sound , ▁of ▁sharp ▁and ▁effective ▁rh yth ms ". ▁The ▁unusual ▁effect ▁employed ▁in ▁the ▁over t ure ▁of ▁Il ▁sign or ▁Br