▁A we igh ▁On ▁his ▁own , ▁Jerry ▁Mouse ▁appears ▁in ▁a ▁fant asy ▁sequence ▁in ▁the ▁ 1 9 4 5 ▁Gene ▁Kelly ▁M GM ▁musical ▁film ▁An ch ors ▁A we igh . ▁Jerry ▁appears ▁as ▁the ▁r uler ▁of ▁a ▁kingdom ▁where ▁music ▁is ▁b anned ▁because ▁he ▁feels ▁he ▁la cks ▁talent , ▁and ▁Kelly ▁persu ades ▁the ▁mouse ▁into ▁performing ▁a ▁song - and - d ance ▁number ▁with ▁him . ▁Kelly ▁and ▁M GM ▁had ▁originally ▁wanted ▁W alt ▁Disney ' s ▁Mic key ▁Mouse ▁as ▁Kelly ' s ▁dance ▁partner ▁for ▁the ▁sequence , ▁but ▁Disney ▁was ▁unw illing ▁to ▁license ▁the ▁character . ▁ ▁H anna ▁and ▁Bar ber a ▁achieved ▁the ▁effect ▁of ▁Kelly ▁dan cing ▁with ▁Jerry ▁by ▁rot os cop ing : ▁live - action ▁pl ates ▁of ▁Kelly ▁dan cing ▁alone ▁were ▁shot ▁first , ▁and ▁the ▁action ▁trac ed ▁frame ▁by ▁frame ▁so ▁that ▁Jerry ' s ▁movements ▁would ▁match . ▁The ▁success ▁of ▁the ▁animated ▁segment ▁of ▁An ch ors ▁A we igh , ▁which ▁was ▁noted ▁as ▁" ste aling ▁the ▁show " ▁in ▁contemporary ▁trade ▁reviews , ▁led ▁to ▁two ▁more ▁live - action / anim ated ▁projects ▁for ▁H anna ▁and ▁Bar ber a ▁and ▁M GM : ▁an ▁under water ▁bal let ▁sequence ▁featuring ▁both ▁Tom ▁and ▁Jerry ▁in ▁Est her ▁Williams ' ▁ 1 9 5 3 ▁film ▁D anger ous ▁When ▁W et , ▁and ▁the ▁" S in bad ▁the ▁S ail