Melissa Etheridge Sings About Brad Pitt, Angelina Jolie Divorce

— -- Melissa Etheridge is still speaking out about her friend, Brad Pitt, after comments she made on Andy Cohen's SiriusXM radio show caused headlines earlier this week. This time, the singer decided to sing about it on Wednesday night's "Watch What Happens Live."

On Cohen's radio show Monday, Etheridge, 55, said although she hasn't spoken to Pitt in "years," the child abuse allegations leveled against Pitt were "complete unfounded" and "heartbreaking."

A source told ABC News that the FBI is investigating Pitt over an allegation of child abuse. If any charges are filed against Pitt, they'd likely be misdemeanors, according to the source.

Meanwhile, sources close to Pitt, 52, told ABC News that the actor is taking the allegations very seriously and cooperating with authorities. However, they added, many of the claims made against him are either exaggerated or outright fabricated.

When Etheridge sat down again with Cohen, 48, on "Watch What Happens Live," the singer revealed she had been contacted by a person on Jolie's team after the radio show aired, but didn't elaborate.

"There are people whose business it is, whose job it is, to kind of fix things for celebrities," Etheridge hinted instead.

She later added, "Every time I say something it gets turned around and twisted and all of a sudden I’m saying something about [Jolie]."

To clear up any speculation that she was bashing Jolie, 41, who was married to Pitt for two years before filing for divorce last month, Etheridge said she wrote a song called, "The Fixer Blues."

In one part of the song, she sings: "I have not seen my friend in over 10...years and I swear I have never, ever, ever, ever met his wife."

Etheridge later croons, "I hope you understand to scandalize was never my plan...when your chatting with Andy, you better watch what you say."