Legendary performer Tina Turner attended the world premiere of a stage musical based on her life in London on Tuesday, PEOPLE reports.

The 78-year old star, who was closely involved with Tina: The Tina Turner Musical shared a message to the audience, as she took the stage.

“It is possible to turn poison into medicine,” she said.

The musical production tells the life-story of the “Simple the Best” singer, from growing up in poverty in Tennessee to the abusive relationship she had with Ike Turner.

Turner jokes that she “forgave” Ike while speaking to Kobna Holdbrook-Smith, who played her ex-husband, who died in 2007.

“I found a replacement,” she said as she faced her second husband Erwin Bach.

“We have been working on this show for more than three years now,” Turner writes in the musical’s program notes. “I’ve been blessed with a wonderful career,” she says, “I still can’t believe how people feel about me on stage and the legacy they say I left. People tell me I gave them hope. It meant so much to people I feel I have to pass it on, and I hope this show serves what the people need, as a reminder of my work.”

The show stars Adrienne Warren, who takes on the iconic singer and performs her hits “Nutbush City Limits,” “Proud Mary” and “What’s Love Got to Do with It.”