The Triffids are an iconic piece of science fiction. Any locomoting plants in sci-fi stories will inevitably be compared with them.
The full-color alien invasion horror movie aspect makes me think about Invasion of the Body Snatchers, but there doesn’t really seem to be much in common between “anyone near you could have been replaced by an alien” and “run from that twenty-foot tall walking plant”. If there’s an allegory for something in the public consciousness in the 60s here, I’m not sure what it would be.
I’ve heard of this movie, and the basic synopsis, but I never got the impression it was a musical. So I don’t know much of anything. I’d even forgotten until I looked it up that the reason it reminds me of the legend of the Rape of the Sabine Women is because it’s based on it.
When I think of frontier musicals, I think of the infamy of Paint Your Wagon. Which I haven’t actually seen and would probably like better than its reputation.
I think Howard Keel wore the same mustache that’s pictured in the last movie I saw him in. I think I’d like him better without it.