Influential jazz icon Donald Byrd died Monday at the age of 80. The trumpeter’s passing was confirmed by his nephew, Alex Bugnon, and the cause of death is undisclosed.

Throughout his career, Byrd worked with musical icons, such as Art Blakely, John Coltrane, Sonny Rollins, Thelonius Monk, and Herbie Hancock. In the ’70s, he formed the fusion group The Blackbyrds, and the group quickly spiraled up the music charts pumping out memorable R&B-meets-jazz hits, such as “Walking in Rhythm,”  ”Rock Creek Park,” and “Happy Music.”

Even though Byrd’s roots were in bebop, he later sashayed into soul and funk, particularly jazz fusion.