Listening to classical music while you sleep may improve test scores

Baylor University researchers found that listening to classical music during a lecture and sleep can improve test scores. The study involved 50 students who listened to music or white noise during deep sleep. The music group showed improved memory reactivation, doubling their chances of passing a test. However, the effect was short-lived, but researchers suggest repeated exposure could offer long-term benefits.

What were the results of the comparison between the group that heard classical music and the group that heard white noise?

What suggestions did the researchers make regarding the duration of music exposure for potential long-term benefits?