Martin Hackleman began playing the horn at the age of 16, studying with Caesar LaMonaca in Houston. Other teachers have included Barry Tuckwell and Roland Berger of the Vienna Philharmonic. He studied at the University of Houston and at age 19 joined the Calgary Philharmonic as principal horn. After two seasons in Calgary, he joined the Vancouver Symphony as solo horn, where he played for the next nine years.
In 1983 Hackleman left Vancouver to join the world-renowned Canadian Brass. His three years with the group saw many outstanding achievements, including recordings for CBS Masterworks, extensive tours of the US, Canada, Europe, and the Far East, a Canadian JUNO award for "best classical record,” the group's Hollywood Bowl premiere, and the release of their first video. Hackleman then joined the Empire Brass Quintet, whose moderate concert schedule allowed him time to pursue a solo career as well as specialty interests such as the Vienna horn and natural horn. He was a member of the EBQ for four years.
He returned to Vancouver in November of 1989, where he played principal horn in the Vancouver Symphony Orchestra once again and served as Adjunct Professor of Horn at the University of British Columbia. In 1990, Hackleman helped launch a nationally broadcast chamber music series on CBC Radio called "CURIO," featuring chamber music of forgotten composers.
For the 1999-2000 season, he was invited to play principal horn in the Montreal Symphony under Charles Dutoit. In 2000 he was appointed principal horn of the National Symphony at the Kennedy Center in Washington DC, where he remained until 2012 when joined the faculty at the University of Missouri Kansas City. He performed as guest principal with the Philadelphia Orchestra on two occasions while living in Washington DC, and also played principal horn in the Chautauqua Orchestra at The Chautauqua Institute and at the Waterloo Festival in Princeton, New York.
Hackleman has made numerous recordings with the National Symphony, Vancouver Symphony, Montreal Symphony, Canadian Brass, Tidewater Brass, Washington Symphonic Brass, and the Empire Brass. In 1999 he recorded two solo albums: one entirely of his own arrangements for solo horn with piano and string accompaniment, and one of five lost Romantic concertos with the CBC Vancouver Orchestra. In addition, a recording of chamber music for two horns and bassoon was released in the spring of 1996. In November of 1998 a Christmas recording with horn quartet was released. A disc of the Brahms Horn Trio with other chamber music was released in July of 2000.
Hackleman has made numerous contributions to horn pedagogy, including etudes and other materials published by Editions Bim and Legacy Horn Experience. He has served on the faculty at the University of Maryland, Boston University, the University of British Columbia, and the University of Missouri Kansas City Conservatory of Music. For four years he coached the Asian Youth Orchestra and participated in their annual world tours. As a member of Summit Brass, he has performed, recorded, and taught during the summers at the Rafael Méndez Brass Institute. For many years he was a design consultant with Yamaha. Over the years he has been invited to give master classes at Juilliard, the Manhattan School, Curtis Institute, and the University of California, Los Angeles.
Martin Hackleman was elected an IHS Honorary Member in 2024.