That's Bing Crosby and Fred Astaire. Famed Broadway songwriter Irving Berlin was no stranger to Hollywood. In the classic film days, musicals were made featuring a Berlin music catalogue. Musicals such as ALEXANDER'S RAGTIME BAND (1939), EASTER PARADE (1948), WHITE CRHISTMAS (1954) and THERE'S NO BUSINESS LIKE SHOW BUSINESS (1954) featured Irving Berlin classics from Broadway and new tunes he wrote for the films.
Paramount's 1942 hit, HOLIDAY INN, was no exception. It entertained with Irving Berlin standards and new songs for Crosby and Astaire to introduce. One new song that Crosby introduced got Irving Berlin the Oscar for Best Song. It was "White Christmas."
To acknowledge the 4th of July, here are Bing and Fred performing Irving Berlin songs from HOLIDAY INN.
Here are "Song of Freedom" and "Let's Say It With Firecrackers."