Scene I: After a lifetime of writing popular songs, including patriotic ones, Cohan gets a medal from Franklin Roosevelt at the White House, and dances down the stairs in joy. He then joins a line of soldiers marching off to WWII, all singing song he wrote, “Over There.” Nobody recognizes Cohan as he falls in line, and one solder asks him, “What’s the matter, old timer—don’t you remember this song?” Cohan replies, “Seems to me that I do,” and joins in.
I watched that movie every fourth of July during my childhood. It’s terrific, and has some nice dance scenes (did you know Cagney was a great dancer?). Here’s a famous one: