The purpose of this study is to examine the effects of visual stimuli on emotion in music listening through experiments. In the experiments, the following three ways were examined, each of which had two cases to be compared: (1) when only music was used and when music and an image compatible with the music were used, (2) when only music was used and when music and an image incompatible with the music were used, and (3) when music and a compatible image were used and when music and an incompatible image were used. As a result, five effects were discovered: (1) Impression of music depends on images and their contents, (2) Impression of images depends on music, (3) Impression of music is easily influenced by visual stimuli, (4) one's subjective emotion is unlikely to be influenced by visual stimuli, and (5) an image incompatible interferes with true impression of music.