The Across 110th Street singer was billed to headline Gabriel's Womad festival in England at the end of the month (Jul14).
The former Genesis star, who co-founded the world music event, says, "I'm very sad to learn of Bobby Womack's death. We were very proud to be having him closing this year's Womad Charlton Park. His songs and his voice have been so much a part of the fabric of so many musical lives.
"He was a soul legend and will leave a big hole."
Other celebrity tributes to Womack have been posted by Ronnie Wood, Stevie Wonder, Justin Timberlake and Damon Albarn, who helped to revive the soul veteran's career by inviting him to join the Gorillaz in 2010.