original: before snow white , the disney studio had been primarily involved in the production of animated short subjects in the mickey mouse and silly symphonies series .
simplifications: before snow white , the disney studio had mostly been making short cartoons in the mickey mouse and silly symphonies series . disney studios did mickey mouse and silly synphonies before they did snow white . before snow white , the disney studio had been involved in the production of animated short subjects in the mickey mouse and silly symphonies series . prior to snow white disney primarily did animated shorts like mickey mouse and the silly symphonies series . before snow white , the disney studio had been mostly involved in the production of animated short subjects in the mickey mouse and silly symphonies series . before snow white , the disney studio had been primarily involved in the production of animated -lrb- made lively -rrb- short subjects in the mickey mouse and silly symphonies series . before snow white , the disney studio had been mostly involved in the production of animated short subjects in the mickey mouse and silly symphonies series . the disney studio had been had been primarily involved in the production of animated short subjects in the mickey mouse and silly symphonies series before they went on to start snow white .