For 10 points, name this member of the Big Five orchestras based in Illinois.
This orchestra premiered the symphony Alternative Energy, which is notable for incorporating electronica, and which was composed by Mason Bates, who is currently composer-in-residence for this orchestra along with Anna Clyne. A music director for this orchestra conducted 999 of its concerts and died in 1997, a month before he was scheduled to conduct his thousandth; that man studied under Béla Bartók. All but two of the recordings in Fantasia 2000 were done by this orchestra. Its summer home is the (*) Ravinia Festival. Since 2010, Riccardo Muti has been this orchestra's music director, a post previously held by Daniel Barenboim and Georg Solti. For 10 points, name this member of the Big Five orchestras based in Illinois.
This orchestra premiered the symphony Alternative Energy, which is notable for incorporating electronica, and which was composed by Mason Bates, who is currently composer-in-residence for this orchestra along with Anna Clyne.
Chicago Symphony Orchestra