Washington DC, May 21 -- 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 un...