Singer and songwriter Bobby Dwayne Womack has died, aged 70. The cause of death is as yet unknown but Womack had been suffering from Alzheimer's and also fought long, hard battles with cocaine addiction.

His career in music spanned nearly six decades and Womack worked with a range of stars from The Rolling Stones and Janis Joplin to Damon Albarn. Albarn collaborated with Womack on The Bravest Man In The Universe, released on XL in 2012 to critical acclaim. Earlier this year Albarn said of Womack, "when that voice comes out, it is something that is somehow touched by God."

His final record, the now poignantly titled The Best Is Yet To Come is set for release later this year.

Sadly, Womack was blighted by addictions and personal problems throughout his life, but always held onto that incredible voice. Widely regarded as one of the greatest R&B singers of all time, he will be sorely missed by a legion of artists and fans.