ucky ▁Rab bit , ▁the ▁star ▁of ▁the ▁Universal ▁Studios ▁animation ▁department ▁led ▁by ▁L ant z . ▁A ▁black - and - white ▁sound ▁cart oon ▁featuring ▁O sw ald , ▁titled ▁My ▁Pal ▁Paul , ▁also ▁released ▁in ▁ 1 9 3 0 ▁by ▁Universal , ▁promoted ▁King ▁of ▁Jazz ▁by ▁including ▁songs ▁from ▁the ▁film ▁and ▁a ▁cart oon ▁Paul ▁Wh item an ▁character . ▁ ▁Some ▁of ▁the ▁scenes ▁from ▁the ▁animated ▁cart oon ▁sequence ▁would ▁be ▁later ▁re - used ▁for ▁a ▁later ▁Walter ▁L ant z ▁O sw ald ▁Cart oon , ▁Africa . ▁ ▁Sound track ▁King ▁of ▁Jazz ▁was ▁the ▁first ▁feature - length ▁film ▁to ▁use ▁a ▁mostly ▁pre - record ed ▁sound track ▁made ▁independently ▁of ▁the ▁actual ▁film ing . ▁Wh item an ▁ins isted ▁that ▁musical ▁numbers ▁featuring ▁his ▁or chestra ▁should ▁be ▁pre - record ed ▁in ▁order ▁to ▁obtain ▁the ▁best ▁sound , ▁avoid ing ▁the ▁poor ▁recording ▁conditions ▁and ▁extr aneous ▁no ises ▁typical ▁of ▁a ▁movie ▁studio ▁sound ▁stage . ▁Universal ▁opposed ▁the ▁idea , ▁but ▁Wh item an ▁pre va iled ▁over ▁the ▁rel uct ant ▁studio ▁execut ives . ▁After ▁the ▁sound ▁was ▁recorded , ▁it ▁was ▁played ▁back ▁through ▁a ▁loud spe aker ▁while ▁the ▁scene ▁was ▁being ▁fil med ▁and ▁the ▁perform ers ▁matched ▁their ▁actions ▁to ▁the ▁recording . ▁Later , ▁the ▁resulting ▁film ▁was ▁synchron ized ▁with ▁the ▁sound track . ▁This ▁also ▁allowed ▁the ▁scene ▁to ▁be ▁shot ▁in ▁the