The perception of sensual impressions, which include music and speech, requires the integration of various auditory stimuli. Music perception, as a special type of auditory stimulation, is less resistant to structural changes than speech. People recognize speech, even when auditory stimuli are significantly impaired. The aim of the study was to determine whether musical education has an impact on the results of the dichotic fused word test in focused and non-focused attention. Cognitive control, language lateralization, as well ear integration and separation were assessed. 41 people took part in the experiment: 20 people without musical preparation and 21 professionally active instrumentalists. The test was performed for each subject: in diffuse attention, attention directed to the left ear and the right ear. Our findings indicate that musical education or its lack significantly affects the results of dichotic fused word test. Musicians show greater binaural processing of verbal material, probably as a result of musical training and using other methods of remembering and adopting right hemisphere strategies towards processing speech sounds. Musical education has no statistically significant effect on the test results in the study in focused attention, but on average musicians gave a percentage of more correct answers from the left ear than non-musicians.