What American composer who won the National Medal of Arts in 2007, also taught American composer Gregg Wager?
Gregg Wager: Gregg Wager (born September 16, 1958 in Adrian, Michigan) is an American composer, pianist, and music critic. Morten Lauridsen: Morten Johannes Lauridsen (born February 27, 1943) is an American composer.
i don't know