Music theory short called for “YueLi”, including the relatively simple basic theory--- Read, intervals, chords, rhythms, beats and so on. The general music theory as we say usually refers to the basic part in the music theory, often namely “the basic music theory”. Sight singing and ear training contain two great items: Visual spectrum with singing and Auricular training. Visual spectrum with singing relates to the ability of people who can accurately sing the melody of the pitch and rhythm based on the music scores’ requests, and to deepen the tempo, and interval mode of perceptual awareness. Auricular training is used to develop the ability to distinguish the rhythm of music, the memory of music and the inner hearing of music. This course combines the music theory and Sight singing and ear training, relates to the listen and sing part while learning the basic of music theory, gives a strong support on the improvement of singing level and artistic appreciation.