Gregg Allman's death prompts tributes from Cher, Keith Urban, Guns N' Roses' Slash

Cher, Keith Urban and Slash from Guns N' Roses are among the many musicians and entertainers paying tribute to Gregg Allman following news of the Tennessee-born rocker's death at age 69.

The Allman Brothers Band posted on its website Saturday that Allman, a founding member, "passed away peacefully at his home" in Savannah, Ga.

• Southern rock legend Gregg Allman dies, age 69

Cher, who was married to Allman in 1975, tweeted:"I've tried...Words are impossible." The couple, who legally separated in 1977 before divorcing, are parents of Elijah Blue Allman, 40.

According to the Allman Brothers Band, Allman had battled many health issues over the years. The cause of death wasn't given, but the musician's longtime manager, Michael Lehman, told CNN he died following complications from liver cancer.

"During that time, Gregg considered being on the road playing music with his brothers and solo band for his beloved fans, essential medicine for his soul," a message on the band's website said. "Playing music lifted him up and kept him going during the toughest of times."

Many performers, including Melissa Ethridge, Maroon 5 guitarist James Valentine and Guns N' Roses guitarist Slash, said Allman had a unique voice and musical influence.

Allman's bluesy tones and musicianship with the organ made him a pioneer of southern rock. Urban, Brad Paisley and Travis Tritt were among the Grammy-winning country music artists singing Allman's praises.

Musicians weren't the only ones paying homage to the musical great.

Almost Famous director Cameron Crowe thanked Allman in a tweet "for the inspiration, and for those many holy nights on stage," and Captain America star Chris Evans tweeted that the classic tune Whipping Post, which was famously performed for 22 minutes on the 1971 live album At Filmore East, would be "on repeat all day today."