Pop star Katy Perry hasn’t talked about her split with Russell Brand — until now.

But the blue-haired beauty did her way — through song.

Katy debuted her new tune “Part of Me” at the Grammys Sunday night. It’s a song that clearly referenced her breakup with the British comedian with lyrics like:

“You chew me up and spit me up.  You took my life/ You drained me down/ But that was then, and this is now.”

“Look at me/ This is the part of me that you’re never ever going to take away from me.”

“Look at me/ I’m sparkling/ You will never put me out again/ So you can keep the diamond ring/ It don’t mean nothing anyway.”

The track drops February 21.