I am a doctoral researcher at the College of Music and Performing Arts, Daegu Catholic University, South Korea. My interdisciplinary research lies at the intersection of music, sleep science, psychophysiology, and cognitive neuroscience. I am particularly interested in how music, auditory stimulation, and intelligent sound environments can improve sleep quality, regulate emotion, support cognitive recovery, and enhance well-being in both clinical and everyday settings. My current work focuses on music- and sound-based interventions for ICU patients, daytime napping and fatigue recovery, autonomic nervous system responses, and personalized auditory interventions informed by physiological signals. I also explore the application of EEG, HRV, and other biosignals in evaluating the effects of music on sleep, emotion, and cognition. My long-term goal is to develop evidence-based, personalized, and clinically applicable music interventions for sleep and health.