Gregory Roosa was appointed Second Horn of the Los Angeles Philharmonic by Gustavo Dudamel in September 2012. Prior to that he held the Fourth Horn position in the St. Louis Symphony Orchestra since 2003. He performed as soloist with the SLSO in 2007. His previous positions include Fourth Horn with the Kennedy Center Opera and Ballet Orchestra, and Fourth Horn with the Colorado Symphony in Denver.
A native of Troy, Michigan, Roosa attended the University of Illinois and studied with Ralph Froelich at the University of South Florida. In 1992 he moved to Chicago to study with Dale Clevenger, Principal Horn with the Chicago Symphony. He was a member of the Civic Orchestra of Chicago for three seasons. Active as a freelance musician in the Chicago area for eight years, Roosa played the Broadway shows Ragtime, Phantom of the Opera, and Miss Saigon. He also played with the Chicago Symphony Orchestra, including a European tour and two recordings. Roosa has appeared as soloist and clinician at numerous universities and horn workshops around the world.
Roosa has performed with the Melbourne Symphony Orchestra and Queensland Orchestra in Australia, as well as with the Florida Orchestra and Detroit Symphony in the United States. He was a member of the Colorado Music Festival Orchestra from 1999-2012, where he met his wife, Amy Jo Rhine, the 3rd Horn of LAPhil. Together they have two young boys, Norton and Sutton.
Roosa is an avid cyclist and has ridden in several Century Rides in Colorado and also competed in a professional race to the top of 14,000-foot Mt. Evans, near Evergreen, Colorado in 2009. Roosa and his sons are sports cars enthusiasts and can be found at Laguna Seca on some racing weekends or taking in the local car show.