Walsh and Barker sing the comic song 'Never Blow Your Whistle In The Park'.
Titles read: "Pathetone now has pleasure in presenting - The popular Radio and Variety Stars - WALSH AND BARKER - in another entertaining number".
London (probably Pathe Studio).
Various shots of Walsh and Barker in white tie and tails singing a light-humoured song called 'Never [or Don't] Blow Your Whistle In The Park'. One of them plays the grand piano. They sing in American accents - not sure if they are really American - probably.