Computers are ubiquitous in the process of music recording and distribution, andincreasingly also in the process of music composition and performance. This tool has a considerable effect on the music itself, especially when the computer is pressed into service in the actual role of performer or composer. Since music is assumed to be a form of human emotional expression, one may wonder how a computer can effectivelycontribute to its creation and performance. What can a computer have to “say” in music? By taking a look at its use and influence in Korean music, we see some examples of how the technology affects musical content.