Penn's Music department is committed to World-class undergraduate and graduate education.   Non-majors and beginners can choose from many courses, ranging from music theory and histories of opera, world music, popular music,  jazz, and the music of Africa.  These introductory courses are numbered 0000-1999.  More advanced undergraduate classes, intended for music majors and minors, are numbered 2000-4999.  Offerings above 5000 are considered graduate courses.  See here for a general description of all music courses.