Listen To Harry Styles' Leaked Meghan Trainor/Michael Bublé Song!

Remember that time Meghan Trainor went on and on about that song she wrote with Harry Styles? Well, a knight in shining armour - who happens to be Michael Bublé - has released a teaser for it and we're in love.

The track titled "Someday" features the lyric: "Someday maybe when we're old and grey, we could be in love once more," and yeah, we're obsessed already.

From what we've seen and heard, it appears to only feature Michael and Meghan, but there's speculation that Harry will chime-in at some point, given that he helped write it.  

Speaking previously about the song, Meghan told E! News: "I can't wait for that song to be out. I don't know who's going to sing it. I want it for myself but I don't know who I'm going to sing it with yet."

EDIT (22/10): The song has been officially released! Listen to it here: