The Summer 2014 issue of the Computer Music Journal (which you can read for free by accessing it from the UCI LAN or via VPN tunnel to UCI) has several articles of relevance to this course, including “Ocarina: Designing the iPhone’s Magic Flute” written by Ge Wang, author of Ocarina, the most popular music app for iOS to date and one of the top 20 downloaded apps of all time.

Wang, Ge. “Ocarina: Designing the iPhone’s Magic Flute”. Computer Music Journal, Volume 38, Number 2, Summer 2014, pp. 8-21 (Article). Cambridge, MA: The MIT Press, 2014.