Inclusion Criteria:  Age 13 years up to 25 years Healthy volunteers Native English speaking individuals with no exposure or experience to tonal languages Native Mandarin speakers Hearing sensitivity within normal limits (Puretone hearing thresholds < 25dB from 250 Hz to 8000 Hz) Less than six years of formal music training or experience  Exclusion Criteria:  Proficiency in languages other than English or Chinese History of or current complaint of hearing loss or tinnitus History of or current complaint of cognitive impairments Individuals with more than 5 years of formal music experience or training Complaints of impaired speech perception in noise