I posted below about his death, and since then have discovered this clip of him singing Edelweiss in his own voice – i.e., prior to the dubbing of another singer’s voice (Bill Lee, I think). Honestly, I don’t know why they didn’t use his real voice. In the film, the Captain makes the comment about not having sung in years, so if he sounds a little shaky, it fits the storyline. Anyway, enjoy this version – quite good.