In the 1960s and ‘70s, there was renewed interest in that great master of ragtime music, Scott Joplin. This new vogue for ragtime prompted several American composers to create rags of their own. One memorable piece in this style is by a composer who is originally from Seattle. He taught for over thirty years at the University of Michigan, wrote three operas for Lyric Opera of Chicago, and turned 80 last year. Who is he?