Information:  - The Aspen Music Festival and School is a classical music festival held annually in Aspen, Colorado. It is noted both for its concert programming and its musical training of mostly young-adult music students. Founded in 1949, the typical eight-week summer season includes more than 300 classical music eventsincluding concerts by five orchestras, solo and chamber music performances, fully staged opera productions, master classes, lectures, and childrens programmingand brings in 70,000 audience members. In the winter, the AMFS presents a small series of recitals and Metropolitan Opera Live in HD screenings.  - Robert Spano (pronounced ) (born 7 May 1961, Conneaut, Ohio) is an American conductor and pianist. Since 2001 he has been Music Director of the Atlanta Symphony Orchestra (ASO), and he served as Music Director of the Brooklyn Philharmonic from 1996 to 2004. He is the Music Director of the Aspen Music Festival and School, beginning full-time responsibilities in the 2012 season.  - A pianist is an individual musician who plays the piano. Most forms of Western music can make use of the piano. Consequently, pianists have a wide variety of repertoire and styles to choose from, including traditionally classical music, Jazz, blues and all sorts of popular music, including rock music. Most pianists can, to a certain extent, play other keyboard-related instruments such as the synthesizer, harpsichord, celesta and the organ and keyboard. Perhaps the greatest pianist of all time was Franz Liszt, whose piano mastery was described by Anton Rubinstein: "In comparison with Liszt, all other pianists are children".   - Norman Mackenzie is the Grammy Award winning director of the Atlanta Symphony Orchestra Chorus and Chamber Chorus . Mr. Mackenzie holds The Frannie and Bill Graves Chair as Director of Choruses for the Atlanta Symphony Orchestra . He has won Grammy Awards for the Atlanta Symphony Orchestra and Chorus performances of Vaughn William 's `` A Sea Symphony '' and Berlioz ' `` Requiem '' with Robert Spano conducting . He has received numerous other Grammy nominations for his choruses .  - The Atlanta Symphony Orchestra (ASO) is an American orchestra based in Atlanta, Georgia, USA. Robert Spano has been its music director since 2001. The ASO's main concert venue is Atlanta Symphony Hall in the Woodruff Arts Center.    What entity does 'norman mackenzie ' has the relation 'occupation' with?
Answer:
conductor