Rhett Miller stares across the classroom at the 14 sets of eyes staring back and lets his curiosity run free. This was early September, during Miller’s second class of the semester teaching a songwriting course at the New School in New York’s Greenwich Village. The Old 97’s frontman, with nearly four decades of performing and writing under his belt, is here to teach, and the first step is to hear the 21-year-olds in this senior-level course tell him about the songwriters who inspire them.