From Nature:
Passively listening to Mozart — or indeed any other music you enjoy — does not make you smarter. But more studies should be done to find out whether music lessons could raise your child’s IQ in the long term, concludes a report analysing all the scientific literature on music and intelligence, which was published last week by the German research ministry.The ministry commissioned the report — surprisingly the first to systematically review the literature on the purported intelligence effect of music — from a team of nine German neuroscientists, psychologists, educationalists and philosophers, all music experts. The ministry felt it had to tackle the subject because it had been inundated with requests for funding of studies on music and intelligence, which it didn’t know how to assess.
The interest in this scientific area was first sparked by the controversial 1993 Nature report in which psychologist Frances Rauscher and her colleagues at the University of California, Irvine, claimed that people perform better on spatial tasks — such as recognizing patterns, or folding paper — after listening to Mozart for 10 minutes.
More here.