According to a recent study, listening to music "develops some amount of musical ability within the brain." Good news for the "mozart-for-babies" crowd.
""More and more labs are showing that people have the sensitivity for skills that we thought were only expert skills," explained Henkjan Honing, a researcher behind the study to Science Daily. According to the publication, "the UvA-study shows that listeners without formal musical training, but with sufficient exposure to a certain musical idiom... perform similarly in a musical task when compared to formally trained listeners.""
Read more about it here
Haven't we always known this?