What You Need to Know Before Watching A Song For Nagasaki
Takashi Nagai was a radiologist working at the Nagasaki Red Cross Hospital when the bomb fell on August 9, 1945. He was under a foot of rubble when rescuers pulled him out, already suffering from acute radiation sickness. The documentary about his life and conversion to Catholicism is the closest thing most people will get to understanding what that day actually felt like from the inside, because Nagai kept detailed notes while he was still conscious enough to write them. The film is a Japanese-language documentary that traces Nagai from his medical training through the bombing and his subsequent work documenting the effects of radiation on survivors. It was directed by Koji Wakamatsu and released in 1999. The production quality is serviceable, not spectacular, and the pacing drags in the middle section where it covers his hospital reconstruction efforts. But the material itself carries its own weight. What makes this documentary different from other Hiroshima-Nagasaki films is that Nagai was actively dying during the period he documented. He recorded the symptoms he observed in himself and others with a clinical precision that reads almost unnervingly in retrospect. The film uses his original manuscripts as primary source material, which means you are hearing directly from someone whose body was failing in real time.
I remember first encountering this documentary in a university library archive where the DVD was in rough shape. The disc had scratches across the second act that caused noticeable stuttering, which is annoying but not dealbreaking. What actually helped was watching it through a streaming rip from a Japanese academic source rather than the physical media. The audio clarity was noticeably better on that version, and the subtitles were more accurate. If you are trying to catch some of the technical medical terminology Nagai uses, the DVD subtitles sometimes oversimplify or drop terms entirely. Nagai converted to Catholicism on August 6, 1945, three days before the Nagasaki bombing. This detail is not incidental to the documentary. The film explores how his newly formed faith shaped his response to the aftermath. He did not flee. He stayed at the hospital and treated survivors despite being severely injured himself. That choice is central to whatever you take away from this documentary. The documentary covers the period from roughly 1945 through Nagai's death from radiation-induced complications in 1951. He was 42 years old. His book "The Bells of Nagasaki" was published posthumously and became one of the most widely read accounts of the atomic bombings in Japan. The film references this book extensively and sometimes reads like a visual companion to it rather than a standalone work.
One thing most viewers miss on first watch: Nagai was not just a scientist observing radiation effects. He was a practicing radiologist, which means he understood the physics of what hit him. He knew exactly what kind of damage X-rays and gamma radiation could cause at the cellular level. His personal account carries a technical accuracy that general survivor testimonies do not always have. The documentary does highlight this but could push harder on the specific medical details he recorded. There is a practical reason to approach this carefully. Some segments depict radiation sickness symptoms in clinical detail that may be difficult for certain viewers. The documentary does not sensationalize, but it also does not shy away from showing photographs Nagai himself took at the hospital in the weeks following the bombing. These images are historically important and should be seen, but they are genuinely unsettling. If you are looking for where to actually find this documentary, availability is inconsistent. It has appeared on Criterion Channel at various points but is not permanently listed. Japanese streaming services tend to have more reliable access. Physical copies circulate through academic publishers and some specialty retailers in Japan. If you are outside Japan and want the most straightforward route, checking Kanopy or a university library system is usually your best option, though the catalog changes seasonally.
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The runtime is approximately 90 minutes. The documentary is structured in three acts: Nagai's life before the war, the immediate aftermath of the bombing, and his work treating survivors until his death. The third act is the strongest because it combines his own writings with interviews from people who worked alongside him at the Red Cross Hospital. Those oral histories add texture that the archival footage alone does not provide. A common mistake people make is comparing this film to American documentaries about the same event. They operate from completely different cultural frameworks. Nagai's perspective is shaped by Japanese Buddhist and Catholic traditions in a way that Western filmmakers rarely attempt to represent authentically. The documentary does not explain this context as thoroughly as it probably should, but the subtext is there if you pay attention to it. The film also touches on the political controversy surrounding Nagai's work. He was critical of how the Japanese government handled radiation research in the decades after the war. His views put him at odds with official narratives, and the documentary acknowledges this tension without fully exploring its implications. That feels like an intentional editorial choice on Wakamatsu's part, given his history of making politically charged films.
For anyone researching the atomic bombings specifically from the Japanese side, this documentary is essential viewing, even with its flaws. It fills a gap that Western-produced films simply do not address. Nagai's voice, preserved through both his writing and this recording of his story, remains one of the most direct sources available for understanding what happened in Nagasaki on that morning.
