Howard Hilliard is a fifth generation Californian, where he studied at the University of Southern California and received his Bachelor and Master of Music. At the invitation of principal conductor Zubin Mehta, he was invited to play principal horn in L’Orchestra del Maggio Musicale Fiorentino (Florence Italy’s main orchestra) for over six years. As part of that orchestra, he recorded on many of the major classical labels as well as the original “The Three Tenors” concert from Rome, which was the biggest selling classical CD of all time. After returning to the United States, Dr. Hilliard received his doctoral degree from the University of North Texas College of Music. His most recent concerto engagements in Texas include performances with the Garland, Las Colinas, San Angelo and Symphony Arlington orchestras.

Dr. Hilliard has performed as principal horn in numerous symphonies through out the United States, Europe and Latin America. Orchestras and wind ensembles he has performed as principal horn with include: "I Solisti Fiorentini", "Solisti dell'Ensemble Cameristico Pistoiese", “Orquesta Sinfonica de la UANL” in Monterrey, Mexico, Boston Civic Symphony, North Shore Symphony, Dallas Chamber Orchestra, Plano Symphony, East Texas Symphony, Waco Symphony Orchestra, Irving Symphony, Dallas and Texas Wind Symphonies, Corpus Christi Symphony, Riverside County Philharmonic, West Side Symphony, Burbank Chamber Orchestra, Glendale Chamber Orchestra, American Youth Symphony, and Desert Symphony. He is currently the principal horn of the Garland, Las Colinas, San Angelo and Symphony Arlington orchestras.

Some of the conductors Dr. Hilliard has played principal horn for include: Riccardo Muti, Carlo Maria Guilini, Eduardo Mata, Andrew Davis, Leonard Slatkin, Georges Prètre, Esa-Pekka Salonen, Christian Thielemann Myung-Wha Chung, Semyon Bychkov, James Conlon, Frederick Fennell as well as Zubin Mehta. He has been a voting member of the National Academy of Recording Arts and Science, which selects the "Grammy" awards each year. In addition to being an active freelancer in the DFW Metroplex, he teaches French horn and trumpet, repairs brass instruments, does custom horn work and publishes both pedagogical articles and sheet music. His book "Lip Slurs for Horn" is the best selling book of lip slurs for horn in the world. Sold through Hal Leonard in six continents and used by members of major symphony orchestras throughout the world as well as beginning horn classes throughout Texas. It was featured in dedicated clinics at the 2012 International Horn Symposium. Intermediate Studies for Developing Artists will be released in Oct. of 1012. Much of the same material will be released in 2013 for all brass instruments including jazz etudes for trumpet and trombone. His doctoral dissertation, “The History of Horn Playing in Los Angeles from 1920 to 1970,” was published in two parts in the November 1999 and February 2000 issues of The Horn Call.