Mark Rudoff, associate professor of cello in the School of Music, performs with the Janus String Quartet, the Galileo Trio and Chiarina Piano Quartet. He joins host David Staley on this week's Voices of Excellence to discuss how professors of music bring a different kind of research and scholarship to their roles. He also explains why the double-faced god Janus represents his interest in music, which draws from the past while creating the future.