Abstract: Researches on the relationship between music and emotions is in behavior level to cognition and neuroscience mechanism stage. Cue concordance mode, Expectancy model, Synchronization theory and Multiple-mechanism model respectively from the acoustic cues in music, the listener subject, the interacting between composer and listener and the integrated perspective explain the process of musical inducement of emotions, but three fundamental questions remain.: (1) whether emotions are influenced by music directly or must linked with cognitive? (2) whether the process is domain–specific or domain–general? (3) whether multiple or single mechanisms account for connections between music and emotion ? This paper puts forward some solutions, inconcluding unification concept, use multi-index measurements and think mechanism relations, It also illustrates the field empirical research trend.

Key words: music emotion, music cue, expectancy, synchronization, empathy