Influenced by Bourdieu's cultural capital theory, a relationship between class background and taste is widely studied, but there is not much research on taste in Korean society. Considering cultural importance of music in Korea, this study explores Korean's musical taste and influences of parents' socio-economic on musical taste. The survey results of 1037 members of online music communities demonstrate that people think that classical music is the most sophisticated genre among others. Also, one's taste for classical music is significantly affected by one's family income, mother's educational attainment, and mother's occupation: People from privileged backgrounds are more likely to prefer classical music over other genres. These results show the cognitive and political aspects of symbolic boundaries.