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This study analyzes the walking improvement of young students, who have not suffered any orthopedic problems, while walking listening to sounds, based on 1/f (f=frequency) fluctuation of center body gravity (COG) using Auto Regressive (AR) modeling, provides clear results for the evaluation of improvement to walking stability. While walking listening to Mozart's music, the power spectra of COG fluctuation was close to 1/f fluctuation, and their curves in high frequency ranges were smooth in comparison to that of non-while listening to music. In the case of listening to rock music, the power spectra of COG fluctuation while walking was out of proportion of 1/f fluctuation in high frequency ranges in comparison to that of students who listened to Mozart's music and those which didn't. Mozart music indicates walking improvement whether students like it or not. This study provides a useful method to improve physical fitness and a means for subjects to maintain a state of well-being.