The song went with me catchy and I hear him ever since. It's very refreshing that Shakira not from the general mainstream (mostly disco, dance, pop elements), who just dominated the charts affect, and get carried away. "Can not Remember To Forget You" sounds individually and specifically, though not unique. The mix of new wave, reggae and pop / rock is very well done and quite danceable (as one would expect from just Shakira).
Wider expected fits Rihanna as Kollaboratorin with very well in the song. I had my doubts after the announcement, since Rihanna's voice compared to Shakira's but is very different. However, the two harmonize perfectly!
I bought the song here at Amazon, where there were no problems. It was my first MP3 download, so like always.
From me there for the song a full purchase recommendation! Not just for fans of the two artists. Waiting for Shakira's new album seems even longer after this successful comeback song, than it already is (scheduled for 21 March 2014).