Flow is state where individuals are fully immersed in an activity, feeling a mix of focus, and enjoyment. Flow often leads to peak experience, commonly associated with expert and creative performance. The results found that following flow-inducing performances, there were heightened brain activities, with upper alpha and beta frequency bands, especially in the frontal regions of the brain. The activity in the upper alpha band is linked to creative thinking and problem-solving, while the beta band is often associated with heightened focus and alertness. This increased information flow is linked to enhanced cognitive control, attentional engagement, and the suppression of irrelevant information. The study found that these effects were even more pronounced in expert musicians, suggesting that their brains might be more finely tuned to reap the benefits of flow. By providing the first glimpse of the afterglow of flow in brain activities, this study paves the way for a deeper understanding of the art and science of peak creative performance, and its impacts on overall well-being.