Yes. Multiple authoritative studies support the positive role of music in sleep:
Nature Scientific Reports (2019) found that relaxing music can increase deep sleep, or slow-wave sleep, by up to 46%.
Frontiers in Neurology (2024), summarizing 27 studies, found that music significantly improves subjective sleep-quality scores.
Brainwave audio in specific frequency bands, such as delta and theta, can help the brain transition from wakefulness toward deep sleep.
Music supports sleep through several physiological pathways, including lowering sympathetic arousal, guiding slower brainwaves, and supporting melatonin secretion. It is recognized in sleep medicine as one form of non-drug supportive intervention.