"We had two hours to lay down my vocals," she told Spinner.com on Tuesday about recording the song "In the Ghetto" to honor the 30th anniversary of Elvis's death. "So the next morning, I heard the rough ... and ... I've never cried when I've done anything ... ever ... but I just lost it when I heard it."
The song is the original version of Elvis’s hit from 1969 with Lisa Marie's voice added in. There are also images of her father in the video, the AP reports.
"People have been asking me to do another duet with him forever, but I had to do my own thing before I went back there," Presley, 39, told USA Today. "So I was ready. I just had to figure out what would be right. And suddenly it came to me, all at the eleventh hour."
She did a similar project for the 20th anniversary of her father's death, but "Don't Cry Daddy" was never released commercially.
"In the Ghetto" will be available on iTunes and proceeds from sales will go to the New Orleans branch of Presley Place, a transitional housing facility for homeless families that is in the process of being set up.
"I do think this idea would mean a lot to him," Presley told USA Today. "Singing this particular duet with him was more emotional for me than anything I'd done before. I wanted to focus on something important, and not just do something silly."
She said New Orleans was an obvious choice for her after she saw the aftermath of Katrina. "It was hotter than hell, and the place was like a ghost town," she told the newspaper. "The place is still utterly devastated. I felt like, 'Well, I guess I'm here for a reason.' "
Presley is married to guitarist and music producer Michael Lockwood. Presley has two children from her previous marriage to Danny Keough, Riley, 18, and Benjamin, 14.
In another musical blast from the past, this week the Osmond Brothers, joined by siblings Donny, Marie and Jimmy, taped a 50th anniversary reunion show that PBS will broadcast next year, the AP reports. Its title will be Still.
"I don't think they've been honored or the accolades haven't been what they should be," Marie Osmond, 47, said of brothers Alan, Wayne, Merrill and Jay Osmond, who began as the Osmond Brothers barbershop quartet in 1957.
"We think it could be that in the '70s it was drugs, sex and alcohol, and they were clean cut," Marie further observed. "They were God-fearing, moral men."