Reading the research, it was based on an observational study of 42 adults across three segments of musical training: None, Little (1-3 years), and Moderate (4-1

Reading the research, it was based on an observational study of 42 adults across three segments of musical training: None, Little (1-3 years), and Moderate (4-14) and found that "A greater amount of music training early in life was associated with the most efficient auditory function decades after training stopped." I wouldn't draw any conclusions from this.