ヒューストン交響楽団
In February 2007, Mitchell was appointed American Conducting Fellow of the Houston Symphony by Hans Graf. In that role, he led the orchestra in several dozen concerts—including on all subscription series—in Jones Hall and throughout the greater Houston area each season. His title was augmented to Assistant Conductor/American Conducting Fellow in June 2008; prior to his final season with the orchestra (2010–11), his title was modified again to Assistant Conductor, reflecting the end of his fellowship with the League of American Orchestras. During his four-year tenure with the Houston Symphony (which ended in May 2011), he led the orchestra in over one hundred performances, several of which were broadcast nationwide on SymphonyCast and Performance Today. Since that time, Mitchell has returned frequently to the Houston Symphony as a guest conductor.