Learned skills may be enhanced with sleep

Here is an article, representative of several I saw about new research about sleep and memories. The article titles imply you can learn things while asleep. But that is not what the research showed. In this study, participants learned to play two different tunes on a keyboard. Researchers played one of the tunes while participants slept and concluded that the participants better recalled the tune played while they slept. The results do NOT mean you can learn things while you sleep. These participants had already learned the tunes - playing the tunes for them only enhanced their recall.