Easy listening music or relaxing classics improves the duration and intensity of concentration in all age groups and ability levels. It’s not clear what type of music is better, or what kind of musical structure is necessary to help, but many studies have shown significant effects21.
21. Patston LL, Hogg SL, Tippett LJ. Attention in musicians is more bilateral than in non-musicians. Laterality. 2007 May;12(3):262-72. PubMed