When you think of the late Whitney Houston’s voice and talent, a lot of adjectives come to mind, like “melodious” or “powerful” –– that is, unless you’re Madonna. A vintage letter penned by the pop star has recently surfaced in which she somehow mustered the courage to call Whitney “horribly mediocre.”

The handwritten letter, which is currently being displayed at “The EX-hibition” in collaboration with Bravo and The Museum of Broken Relationships, is a one-page “breakup letter” to a former lover. In her message, she also blows off steam about Houston and actress Sharon Stone, whom she had often been compared to in the media.

“It’s so unequivocally frustrating to read that Whitney Houston has the music career I wish I had, and Sharon Stone has the film career I'll never have,” the “Like a Virgin” singer wrote. “Not because I want to be these women because I’d rather die, but they’re so horribly mediocre and they’re always being held up as paragons of virtue or some sort of measuring stick to humiliate me.”

For those who are thinking Madonna couldn't have possibly let those words slip off the tip of her pen, the letter is legitimate. It was reportedly donated by Madonna’s former art curator and has a hefty price tag of $3,000 to $5,000.

The letter comes only briefly after the internet uncovered an old interview clip of Madonna where she detailed repeated nightmares she was having about Houston taking away her spotlight. Madonna definitely gets a page in the music history books but, icon or not, she cannot come for Whitney. Watch the clip and read the letter below: