You'll Find Out is a 1940 American comedy film directed by David Butler and starring Kay Kyser. The film was nominated for an Academy Award in 1940 for Best Original Song ("I'd Know You Anywhere"). In this film, members of an orchestra hired to play at a young heiress's birthday party uncover a plot against her.[2] The film was very popular and made a profit of $167,000.[1]

https://en.wikipedia.org/wiki/You'll_Find_Out