Lady GagaandTony Bennetthave been friends for a very long time.

Back in 2014, in fact,the enigmatic pop starcredited the legendary crooner with saving her life.

I couldn’t sleep.

Lady Gaga caresses Tony Bennett onstage

And then I spent a lot of time with Tony.

He wanted nothing but my friendship and my voice …

I tell Tony every day that he saved my life."

Lady Gaga and Tony Bennett pose with their Grammy awards

He really is the symbol of hope for someone with a cognitive disorder."