What happy themes in LAST HOUSE? You mean the goofy DUKES OF HAZZARD music for the cop bits? Hess' song 'The Road Leads To Nowhere' is certainly not happy. BTW, some versions have the police bits excised. Craven did these to give the audience a release from the violence. Speaking of the violence, there will never be a completely uncut version of this movie since projectionists all over the US cut and trimmed the movie to their liking.
The scene where the gut the girl, play with her entrails followed by their stunned looks of disbelief then washing their hands in the river as if they are washing away the crime itself is more powerful than anything I remember in NIGHT TRAIN. As I said I remember very little.
The cinematography is excellent in NIGHT TRAIN but regarding LAST HOUSE, the documentary look and feel was what Craven was going for. LAST HOUSE is still not available "completely uncut" in britain even after all these years. NIGHT TRAIN plays like a movie while LAST HOUSE seems like it is really happening.
Again, I like NIGHT TRAIN...but until I see it again LAST HOUSE is the better movie for me.