CotD: Though not credited, this was a Frank Tashlin cartoon; Bing once told Tash he hated this one! Watch “Swooner Crooner” at BCDB ~
Swooner Crooner (1951) — Looney Tunes Theatrical Cartoon Series
Production drops at Porky’s wartime Flockheed Eggcraft Factory when the hens leave their posts to hear Frankie, a crooning rooster, sing. Porky stages a contest to find a singer to encourage production. This ends with a singing duel between a Bing Crosby-styled rooster and Frankie that produces mountains of eggs.