This site covers the original British Beatles Albums plus analyses of the lyrics of non-album tracks.
Information on how the Beatles wrote the lyrics to their songs on the yellow submarine album can be navigated from below.
Beatles Album: Yellow Submarine : Track 2
The Beatles Only a Northern Song was written by George Harrison. The Beatles had to provide three songs for the Yellow Submarine project and none of them were interested in doing them. In the end they provided four songs, two of which were George Harrison. The lyrics to Only a Northern Song reflect George's lack of interest in the project and his disdain to the Beatles publishers Northern Songs for making him write songs for the project.
As it both John and Paul had large shares in Northern Publishing George's only a northern song are having a go at Paul and John as he felt that despite him writing the song that they would earn the money from it.
John Lennon: Piano, Various other instruments
Paul McCartney: Bass guitar, Various other instruments
George Harrison: Vocals, Organ, Various other instruments
Ringo Starr: Drums, Various other instruments