This research investigated the effects of Orff-based attention-enhancing music education programme on impulsive preschool children's cognitive tempo. The research was conducted using a quasi-experimental pretest-posttest control group design. Thirty preschoolers were included in this research; 15 in the experimental and 15 in the control groups. Research data was collected using Kansas Reflection-Impulsivity Scale for Preschoolers. Impulsive children were assigned to control and experimental groups. Besides traditional preschool education programme, children in the experimental group received a 36-session Orff-based attention-enhancing music education twice a week. Results showed that impulsive children in the experimental group reduced their number of errors and increased the length of reflection time compared to those in the control group. In line with this finding, it can be suggested that Orff-based attention-enhancing music education programme contributes positively to the cognitive tempo of impulsive preschool children, and it demonstrates long-term effects.