Loved Sam Smith’s “How Will I Know?” Cover on Grey’s Anatomy? Hear the Full Song! (VIDEO)
Credit: Sam Smith on Facebook    

Grey's Anatomy

Loved Sam Smith’s “How Will I Know?” Cover on Grey’s Anatomy? Hear the Full Song! (VIDEO)

Of all the '80s covers Shonda & Co. featured on Season 10 of Grey's Anatomy, few were more exquisite and heartrending than Sam Smith's take on immortal Whitney Houston hit "How Will I Know?" — which has just hit YouTube.

Whitney's version is upbeat and flashy — the 22-year-old Brit's is slow and delicate, bringing new emotion to Whit's 1985 chart-topper.

The medical drama aired Sam's cover in Season 10, Episode 16 — "We Gotta Get Out of This Place" — the song playing as Cristina (Sandra Oh) helps Owen (Kevin McKidd) type up his online dating profile before realizing that the ideal partner he's describing sounds very familiar:

"Someone who doesn't care to cook… or get out of bed when it's not a work day. Someone who sleeps so soundly and peacefully that I have to check her pulse sometimes. Someone who's suffered and understands suffering… to the point that I don't have to say a word. She just looks at me and sees who I am and how I feel. Accepts it. She doesn't try to change it, doesn't want to change it. That person. There's a billion people out there, but I imagine there's only one her."

How will we know when our hearts are breaking?! Cristina and Owen are the couple that could never be — or, in some ways, the couple that will always be.

The acting chops of two Grey's legends + Sam Smith's crystalline voice = TV magic. Check out the song and the scene in the clips embedded below.

Grey's Anatomy Season 11 airs this fall.

Dan Clarendon is an assistant editor at Wetpaint Entertainment. Follow him on Twitter and Google+!