The DVD menu notes of this bonus feature DVD extra state: "The original soundtrack to The Irishman (1978) was released as [a] 4 track 45 rpm Extended Play vinyl disc in 1978 to coincide with the release of the film".
The two tracks featured, in both vocal and instrumental versions, are "Jenny" / "Jenny's Theme" and "The Irishman", totaling to four tracks, two song ballads and two instrumental themes.
The Wikipedia website has said of this title: "The motion picture soundtrack by Charles Marawood was produced on the DVD as a bonus feature by Philip Powers from the original recordings".
The January 1978 edition of Australian film magazine 'Cinema Papers' reported: "Composer Charles Marawood spent some time on location to get the "feel" of the Clydesdales, walking beside them and watching them work. He had already put together some guide themes and these were used on the sets to provide a mood for the actors and crews."
In the October-November 1978 edition of Australian film magazine 'Cinema Papers', director Donald Crombie said of the music in the film The Irishman (1978): "Frankly it was a disappointment, and I am sure Charles Marawood was disappointed too. When first discussing the music with Charles we said the last thing we wanted as a choir in the background, but we ended up with one. Charles' intention was to use the human voice as another instrument, so that one would think, 'My God, that's an interesting sound, what is it ?'. The score just didn't work, but because of the way you record music, strings one day, woodwinds the next and so on, you don't know until the final mix how it is going to sound. By then, we had no money to fix it . . . more than half the music is not in the film. We tried taking the choir out, but we were often left with a very thin soundtrack, and we had to put it back".