Assuming you're referring to the song by various artists or specifically someone like T- Pain Ft. Ludacris & Fetty Wap - 911 / Mr. Lonely or similar.
The song "911" (or "Download 911") appears to be an emergency-themed track where the artists express their feelings of distress and urgency, often metaphorically referring to a romantic emergency.
It seems you're looking for a review of the song "Download 911" from the album "Rar" (which I assume you meant to type "Download 911" from an artist, but didn't specify).
If you could provide more context or specify the artist you're interested in, I could offer a more tailored review.
Here's a general review: