I didn't hear it again until 5:57 this morning. It was playing on the radio as I was driving to the gym and, although I knew that I had heard it before, I just couldn't remember the name of the song OR the artist. Thankfully, the radio station's website keeps a running list of "just played" tracks and, even though it was about 4 hours later that I got around to checking, there it was! Without skipping a beat (ha!), I found it on iTunes and clicked "buy".
So, for your listening pleasure, I give you "Lights" by Ellie Goulding. Enjoy!