Right now, the only way to get a copy of Yael Naim's "New Soul," which is prominently featured in the new Mac Air ad, is to buy it on iTunes. Alternatively, a friend in France could procure you a physical copy of Naim's self-titled album, released there last October by label Tot ou Tard.

But that will all change March 18, when Atlantic releases the album in the United States, two months ahead of schedule. Naim has been signed to Atlantic stateside since 2007.

Like Feist's iPod Nano ad-soundtracking "1234" before it, "New Soul" is racing up the charts and doing big business online. This week, it debuts at No. 9 on the Billboard Hot 100 and No. 2 on Hot Digital Songs after shifting 135,000 copies, according to Nielsen SoundScan.

That marks the highest Hot 100 debut since "What Time Is It" by High School Musical Cast opened at No. 6 last August.

The success of the ad leaves Naim's team at Atlantic in a happy predicament. "When we signed her, we started off with this pretty much unknown girl who sings in Hebrew half the time and built our campaign around that. Now, we have to suddenly change everything," Atlantic head of international Torsten Luth says.

Click here to read the full article including how the song's success impacts the marketing campaign in place, the key to developing her in the US, and how the ad impacts partner labels around the world..