The idea that music makes you smarter received considerable attention from scientists and the media. Listening to music or playing an instrument can actually make you learn better. And research confirms this.

Music has the power to enhance some kinds of higher brain function:
Reading and literacy skills11-13
Spatial-temporal reasoning14-15
Mathematical abilities16-17 – Even children with attention deficit/hyperactivity disorder benefit in mathematics tests from listening to music beforehand.
Emotional intelligence

11. Besson M, Schon D, Moreno S, Santos A, Magne C. Influence of musical expertise and musical training on pitch processing in music and language. Restor Neurol Neurosci. 2007;25(3-4):399-410.PubMed

12. Register D. The effects of an early intervention music curriculum on prereading/writing. J Music Ther. 2001 Fall;38(3):239-48. PubMed

13. Overy K. Dyslexia and music. From timing deficits to musical intervention. Ann N Y Acad Sci. 2003 Nov;999:497-505. PubMed

14. Spatial-Temporal Task Performance Jausovec N, Jausovec K, Gerlic I. The influence of Mozart’s music on brain activity in the process of learning. Jausovec N, Jausovec K, Gerlic I. Clin Neurophysiol. 2006 Dec;117(12):2703-14. PubMed

15. Sarnthein J, vonStein A, Rappelsberger P, Petsche H, Rauscher FH, Shaw GL. Persistent patterns of brain activity: an EEG coherence studyof the positive effect of music on spatial-temporal reasoning. Neurol Res. 1997 Apr;19(2):107-16. PubMed

16. Schmithorst VJ, Holland SK. The effect of musical training on the neural correlates of math processing: a functional magnetic resonance imaging study in humans. Neurosci Lett. 2004 Jan 16;354(3):193-6. PubMed

17. Rauscher FH, Shaw GL, Levine LJ, Wright EL, Dennis WR, Newcomb RL. Music training causes long-term enhancement of preschool children’s spatial-temporal reasoning. Neurol Res. 1997 Feb;19(1):2-8. PubMed