Gable Tostee lamented to his father, "why does this s---Â keep happening to me?" after Warriena Wright plummeted to her death from his 14th floor balcony.
Tostee called his father Gray just after the New Zealand tourist fell from his Surfers Paradise high-rise after a Tinder date in August 2014.
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Warriena: 'No, no, no'
Warriena Wright screams "just let me go home" before falling to her death from Gable Tostee's Surfers Paradise unit: WARNING: GRAPHIC CONTENT. Nine News
The conversation was heard by the jury on the second day of the 30-year-old's Supreme Court trial as part of a distressing audio recording that also captured the final terrifying moments of Ms Wright's life.
She frantically pleaded repeatedly with Tostee to let her go home.
Ms Wright could be heard hysterically screaming "No" more than 30 times as he locked her out on the balcony.
"I want to go home, I want to go home," she said.
About 15 seconds later the recording captured her scream as she fell trying to climb down to the balcony below.
Neighbours testified how they saw her legs dangling above them as she tried to climb down, and then ricocheting off balconies below after she fell.
Ms Wright was found in the driveway by first responders.
Tostee left his unit soon after and called his father and a lawyer, the court heard.
"Dad this is really f---ed up, why does this s---Â keep happening to me," Tostee calmly said in the recording.
"I swear to God I didn't push her, I just chucked her out on the balcony because she was beating me up.
"Oh my God, I hope she's not dead."
Police arrested Tostee at his parents' Carrara house and charged him with murder a week later.
It's not alleged Tostee threw or pushed Ms Wright off his balcony but that he intimidated and threatened her to the extent she felt the only way to escape from him was to climb down.
The court heard how the pair, who met on dating app Tinder, had been drinking in Tostee's unit before a prolonged argument led to him restraining her.
"You're lucky I haven't chucked you off my balcony you goddamn psycho little bitch," Tostee said.
"I'm gonna walk you out of this apartment just the way you are, you're not going to collect any belongings.
"If you try to pull anything I'll knock you out, I'll knock you the f---Â out."
Nick Casey two floors down said he told Ms Wright "you can't get down this way, go back in" as she cried out for help.
"It wasn't long after that she fell straight past where I was standing on the balcony, she ricocheted off a few balconies below," he said.
Her blood-covered jeans were split on one side and covered in white powder from where she'd touched the outside of the building, the court heard.
The trial before Justice John Byrne continues.
AAP