The present study aimed to examine the relationship between musical character and musical impression. In the first study, tone, note and sound pressure of 100 music pieces were changed to numerical data by acoustic analysis. The results of the factor analysis that aim to extract the factor composed musical character shows the extraction of three elements; Richness of sound (Richness), Changing of pitch (Melody), Dynamism. In second study, the experiment was performed by using eight music pieces that have three elements extracted by acoustic analysis. 23 undergraduate or graduate students participated, and their impression to eight music pieces have been measured by questionnaire. The result of impression to music shows the aspects of Richness and Dynamism affect to dynamic impression, while all aspects effect to bright impression. These results indicated that three aspects, Melody, Richness and Dynamism would compose musical character and might effect their impression to music.