Story highlights Joe Grushecky wrote the song

The pair collaborated long distance

(CNN) Bruce Springsteen has new music out and it's taking aim at Donald Trump.

The rocker and his longtime friend Joe Grushecky have released a protest anthem titled "That's What Makes Us Great."

Grushecky, known for his work with the Houserockers, told the Pittsburgh Post-Gazette he wrote the song when Trump took office in January and ran it by Springsteen.

"I had this song, and Bruce and I had been talking," Grushecky said. "I sent it to him and he liked it. I said, 'What do you think about singing on it?' He gave it the Bruce treatment."

The pair didn't even have to meet up to make it happen, Grushecky explained.

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