Objective: This study investigated the effect of lullabies and classical music on preterm neonates’ cerebral oxygenation, vital signs, and comfort during orogastric (OG) tube feeding. Methods: This was a parallel-group pretest-posttest randomized controlled study. The research was conducted between December 2020 and May 2022. The sample consisted of 51 preterm neonates hospitalized in the neonatal intensive care unit (NICU) of Selçuk University Faculty of Medicine Hospital in Konya, Türkiye. Participants were randomized into three groups (17 preterm infants in each group). The first group listened to lullabies sung by their mothers and the second group listened to classical music during OG tube feeding. The control group received routine care with no music. Data were collected using a Neonatal Identification Information Form, Physiological Parameters and rSO2 Monitoring Form, and the Newborn Comfort Behavior Scale (Comfort-Neo). The study was registered on the ClinicalTrials database (NCT05333575). Results: The lullaby group had stable peak heart rates and oxygen saturation levels (p =.002). Both lullaby and classical music groups had significantly higher cerebral oxygenation levels than the control group. The classical music group had the highest cerebral oxygenation level (p =.001). Both lullaby and classical music groups had significantly higher mean Comfort-Neo scores than the control group. The classical music group had the highest mean Comfort-Neo score (p =.040). Conclusion: Preterm neonates who listen to lullabies and classical music are likely to have higher cerebral oxygen and comfort levels. Listening to lullabies helps stabilize vital signs. These results suggest that healthcare professionals should encourage parents to get their preterm neonates to listen to lullabies and classical music.