Has anyone heard SOS?

Dude, I heard it on the radio t'other day and totally loved it. I was planning to go look it up, but by the time I remembered to, I couldn't remember even a single word of it. Thankfully, I searched through the new songs and found it. It's a new Rihanna song and I totally dig it. I'm not 100% sure, but I think the background music is from an 80s song. Sounds almost like a slightly faster Tainted Love or something.