Examiners will struggle too, to produce a single test that measures the same level of ability in children of different ages. (In music tests all candidates for a given grade play the same pieces: in an English test, quite different reading texts and writing topics would suit an eight-year-old than an 11-year-old.) The changes might even have the perverse effect of making children sit more tests.

ECONOMIST: School examinations

Kids who are exposed to music perform better in school: students in high-quality school music education programs score higher on standardized tests compared to students in schools with deficient music education programs, regardless of the socioeconomic level of community.

FORBES: 12 Days of Charitable Giving: Little Kids Rock

Experts discovered that the piped classical music was most effective at deterring troublemakers, after carrying out tests using country tunes and jazz.

BBC: Johann Sebastian Bach

In my tests, I scanned and matched the iTunes libraries on several computers containing all my music about 5, 500 songs, a number Apple says is fairly typical for iTunes users.

WSJ: Apple's Music Service Stores All Your Songs Without Alot of Slow Uploads