Last week at the University of Michigan School of Music, Theater and Dance saw a visit from renowned band composer John Mackey. Accurately described as a young hotshot, Mackey’s transformation from an unknown dance-music composer in New York to a wildly successful creator of band music began with the 2004 wind ensemble arrangement of his orchestral work, Redline Tango. Since then he has received countless performances from high school, college and professional groups and has earned stunning national popularity best illustrated by his estimable total of 5,000 Facebook friends.  Though he came to Michigan for the October 1 performance of