KISS frontman Paul Stanley has penned an emotional message to his old-time friend Hal Prince, who has passed away at the age of 91 today.

On Twitter, Paul has shared a Variety news about Paul’s death, and wrote:

“RIP Hal Prince. A visionary, innovator and legend in theater. I remember my thrill in receiving a “Good Luck” note from him on my opening night in Phantom.”

A fan named Leticia responded to Paul:

“He was an amazing human being. May he rest in peace indeed.”

Another fan named Sara wrote:

“Oh no!!! So sorry to hear that sir, praying for his family”

Harold Prince one of the most popular Broadway musical producer and director. He directed some of the most popular musicals such as “Fiddler on the Roof,” “Cabaret,” “West Side Story,” “Company,” “Sweeney Todd” and “The Phantom of the Opera”.

According to his publicist, he has passed away after a brief illness at the age of 91.

Check out the Instagram post below.