Washington DC [US], May 21 (ANI): A new documentary on legendary rocker Gregg Allman is set to offer an intimate look into his life, music and personal struggles, including the devastating impact of losing his brother Duane Allman, according to People.

Titled 'Gregg Allman: The Music of My Soul', the documentary released its trailer on Wednesday, giving fans a glimpse into the late musician's emotional journey following Duane's tragic death in 1971.

In archival footage featured in the trailer, Gregg candidly reflects on the pain he experienced after losing his older brother in a motorcycle accident at the age of 24.

'I was mad at him for dying. I was mad at life,' Gregg says in the footage. 'You never know how much you're leaning on somebody until they die,' according to People.

In another interview featured in the documentary, Gregg admits he was 'angry at God for taking' Duane.

The documentary also explores other defining chapters of Gregg's life, including his celebrated solo career, struggles with heroin addiction and alcoholism, and his high-profile marriage to Cher. Gregg and Cher were married from 1975 to 1979 and share a son, Elijah Blue Allman.

Gregg had previously spoken about his bond with Duane during a 1981 interview, describing him as the driving force behind the band.

'He was like the mother ship, right? He had this real magic about him that would lock us all in, and we'd all take off. He really had that quality,' Gregg had said.

'It wasn't brothers as you would think 'brothers.' He really respected what I did, and I respected what he did.... Every time I walk up on the stage, I still feel like he's standing right there next to me,' he added, according to People.

The singer had also expressed confidence that Duane's music would endure for generations, saying he would continue to 'support it as long as I'm around.'

Directed by James Keach, the documentary was announced in February and features rare performance footage along with never-before-seen interviews.

According to an official press release, the film 'weaves an intimate portrait of Allman, candidly reflecting on the death of his brother and bandmate Duane, his battles with addiction, and the personal demons that shaped both his life and his music,' according to People.

The documentary will premiere in New York City on June 9 before releasing in theatres on June 17. (ANI)