I believe I do have a timeline of events that you might find informative.
In a band meeting, one of the members of Pier Pressure suggests they do a cover of A Nightingale Sang in Berkeley Square. Russ insists that they should do “the famous bit” and gives a short rendition of Woof, Woof, Woof.
After an initial stunned silence, the rest of the band start to laugh at Russ’ insistence that this is how the song goes. Their hilarity grows as Russ sings in a high-pitched voice and explains that it is the nightingale doing dog impressions.
The lead singer resolves that they are doing the song. He dismisses the rest of the band except for Russ, to whom he says: “You and me are writing a song, Jawbone.”