BerlinCNN — Saman Yasin thought he was leaving prison. It was 5 a.m. and the guards had just told him to pack up his belongings. But the next thing he knew, he was blindfolded with a noose around his neck.“I was under that noose for about 15 minutes, I think,” the Iranian-Kurdish rapper told CNN in an exclusive interview, as he recounted being subjected to a mock execution – allegedly at the hands of the Iranian regime.“I could tell that they had brought in a cleric, and he was reciting the Quran over my head… and he kept telling me ‘Repent, so that you go to heaven.’”Yasin is now in Berlin after making a perilous escape from Iran. He spoke to CNN exclusively about his plight, and how he says his jailers used torture trying to force him to confess to crimes he says he did not commit.Yasin spent two years in Iran’s jails for his involvement in the “Woman, Life, Freedom” protests in 2022, during which he joined street demonstrations and recorded anti-regime songs.The months-long uprising was sparked by the death of 22-year-old Iranian-Kurdish woman Mahsa Amini in September that year after she was arrested for allegedly not observing Iran’s mandatory hijab law.Protesters were met with brutal force, with more than 500 people killed in the crackdown since, according to a United Nations report, citing “credible reports” that at least 49 women and 68 children were among them. CNN cannot independently verify the numbers of people killed or arrested, as Iran has not given precise data.A police motorcycle burns during a protest in Tehran in September 2022 over the death of Mahsa Amini, a woman who died after being arrested for allegedly not observing Iran’s mandatory hijab law.A police motorcycle burns during a protest in Tehran in September 2022 over the death of Mahsa Amini, a woman who died after being arrested for allegedly not observing Iran’s mandatory hijab law. WANA/ReutersYasin, whose legal name is Saman Sayedi, was arrested in October 2022 and is among many artists who were prosecuted in connection with the movement.He was initially sentenced to death after being charged with the Islamic Republic’s crime of “waging war against God” by pulling out a gun during an anti-government protest, firing three bullets into the air, and “gathering and colluding with the intention to carry out a crime against national security,” according to the Iranian judiciary’s Mizan news agency. Yasin denies the charges.Both Amnesty International and the UN’s Independent International Fact-Finding Mission on Iran say that 10 men have been executed in relation to the insurrection sparked by Amini’s death.Yasin was one of dozens of protesters who appeared in what rights groups described as sham trials based on forced confessions extracted under torture.Iran’s Supreme Court later overturned Yasin’s death sentence on appeal, and his sentence was eventually set at five years. In the summer of 2023, the artist managed to release an audio message from prison, shared by a Kurdish rights organization, in which he first alleged being abused by the authorities as they attempted to extract a confession.Yasin’s audio message from prison00:42Now, he is able to describe his ordeal in far greater detail as he recovers in Germany, and earlier this month testified before a UN human rights commission in Geneva, Switzerland.“Mentally, I am completely shattered, but I am slowly learning to cope with it,” the 29-year-old artist told CNN, speaking at a Berlin music studio that has invited him to record for free. While he tried to break into a smile as he arrived, he was visibly anxious.“Physically, the torture I endured has changed me tremendously – there are still lasting effects. I developed a lot of trauma after prison,” he said. The words “Nothing can stop me” are tattooed in English on one of his wrists.CNN reached out to the Iranian government’s permanent mission to the United Nations for comment regarding Yasin’s allegations of torture and abuse while in detention. The mission acknowledged the request but has yet to comment.Lyrics in Yasin’s music foreshadowed the torture …00:15Yasin had long been writing what he describes as “protest music” about social injustice and hardship in Iran.In his song “Haji,” written and released months before being arrested, he sang:“I stood tall with pride. Yet they banned my voice. They forbade my happiness. They hung me upside down like a sacrificial animal.”Those lyrics were to foreshadow the torture he says was inflicted by Iranian authorities after his arrest.‘They call it the morgue’Yasin told CNN he was under “the most severe torture” during his first three months in detention, and that at one point his interrogator told him he would get a confession out of him with the pen he was holding.“They inserted a pen into my left nostril and then forcefully hit it from below. I passed out from the pain, and when I woke up, I was covered in blood,” he said.The rapper interrupted his conversation with CNN multiple times as he recalled his experience behind bars. He wears a nasal dilator to help him cope with breathing difficulties he says are a result of the abuse he suffered. His nose looks damaged.They hoisted me up – one hour, two hours – just hanging. Then they would bring me down for two or three hours before hanging me up againSaman YasinThen there was the underground cold room inside the Evin prison compound, which Yasin says interrogators told him “doesn’t even exist on the map.” He believes it’s in a building that belongs to Iran’s Ministry of Intelligence.“I heard from the other prisoners that they call it the morgue because the temperature is so low,” he said. “It is freezing cold.”“They hoisted me up – one hour, two hours – just hanging. Then they would bring me down for two or three hours before hanging me up again,” Yasin told CNN. “After a while, I reached a state where it felt like I was slipping in and out of consciousness – like a dream, half awake, half asleep – because I was hanging upside down. They did this to me for three days.”Saman Yasin alleges torture and abuse while held in Evin prison in Tehran, pictured in October 2022.Saman Yasin alleges torture and abuse while held in Evin prison in Tehran, pictured in October 2022. Majid Asgaripour/WANA/ReutersOther abusive techniques Yasin says he endured included being thrown down the stairs, beatings, insults, false claims that his brother was in custody, and forced psychiatric evaluations. Yasin says he was coerced and ultimately confessed under duress that he was the man in a video released on state media, and that he fired a gun during a protest the night he was arrested. He told CNN neither point was true and that his death sentence was later reduced in part because video evidence showed it was not his hands holding the gun.His testimony is consistent with the findings of a two-year investigation into the 2022 crackdown by the UN’s fact-finding mission. It said the Iranian government “consistently refuted allegations of torture,” but did not indicate whether allegations had been investigated or why they had been dismissed. The UN report also found that the alleged crimes were committed “in furtherance of a state policy.”