I'd agree with comment above that it's a polka, but lots of things can be played "polka style" so it's not really safe to assume that's what was intended.

The voice at the beginning mumbles something about:

"we're going to play ...Forrest Rogers .*.. where is Forrest Rogers? He's in the army and I wish him the best of luck.

At the .*.. unintelligible, the speaker may have said something about (something) "Dodgers" or may have repeated a reference to "Rogers." There's an additional "Pete Lonely Yard?" perhaps. This last comment is very indistinct.

Suspicion: written (or arranged) by a Forrest Rogers? (or Forest Rodgers, etc)? Or maybe just dedicated to him? Can't tell.

John