Listen here to the premiere of the No BS Brass Band's recording of "Haitian Fight Song"

PJ Sykes

For music fans who aren’t brass-band aficionados, Reggie Pace may be best known for his work with the band Bon Iver. The trombonist has played with the beloved indie band for a while—but that’s not his only gig.

He’s also a co-founder of the Richmond, Va., based 12-piece outfit known as the No BS! Brass Band, a brass-and-drums jazz band. What does it mean to be “no BS”? Pace says they’re all horns and drums, with no filler or studio tricks.

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The band has two albums dropping in the coming months, the second of which is a tribute to legendary jazz man Charles Mingus. On Fight Song: Tribute to Charles Mingus (July 5) the No BS! Brass Band interprets eight Mingus classics—including “Haitian Fight Song,” which premieres today here on TIME.com.

Pace says the song, based on a traditional Haitian folk melody, is one of his favorite Mingus tunes. “It’s like a sound portrait of the story of the Haitian immigrants and slaves,” he says. “I had the idea of taking that song and bringing it to a modern place, using grooves that in music right now. The situation in Haiti is still pretty horrible so it’s still relevant.”