Daniel Kellogg, who teaches composition at the University of Colorado, loves the string quartet. Some of history's greatest composers wrote their most extraordinary music for two violins, a viola and a cello. So Daniel took the job seriously when he set out to write a big statement that he ultimately called String Quartet No. 1. He had worked up to it. He wrote a half-dozen pieces for string quartet before he composed this one. Hear a recording of the world premiere of String Quartet No. 1 -- played by the Grammy-winning Pacifica Quartet at the Aspen Music Festival & School -- in this episode of Centennial Sounds from CPR Classical and Colorado Public Radio.