Song in 26 seconds is not a song in the typical sense. It's just a composition that a commoner makes for himself when travelling on dilapidated car. Then some resentment goes from him and the song really turns into a voice stream. It is difficult to understand in this reprise, where music is and where lyrics are. As part of an animated film, it's probably interesting. As an independent work – of course, no. If assigning a genre – the maximum is folk.
Reference:Jack Albertson on Wikipedia