I heard this song yesterday in an airplane of all places. You know how before takeoff and after landing some airlines play music to distract you from the fact that you're tired, cranky, hungry, and pressed against one too many strangers? Well Delta surprised me with John Mayer's rendition of "XO" and I can't believe it was the first time I was listening to the version. Most of us already know and love XO as sung by Beyoncé, and while Queen Bey will always reign supreme, I have to say that I'm loving John's warm acoustic version. Soulful and sweet. Made me obsess over the lyrics all over again.