There was a ton of social buzz last week around Demi Lovato's new single, "Heart Attack" -- so much, in fact, that she ended up surprising her fans with an early release on Ryan Seacrest's radio show.
Today, the pop singer and Twitter powerhouse had another surprise up her sleeve: She tweeted out a challenge to #Lovatics, and if they completed it, she promised to "unlock" a new lyric video for them.
Basically, fans had to tweet lyrics from the song, and that tweet traffic was monitored on the website unlockheartattack.com. After her challenge trended worldwide on Twitter, the fun video for the upbeat track was released (watch above). Very cool idea!
What do you think of Demi's Twitter challenge? Do you have predictions for what the official video will look like? you think in the comments or tweet @HuffPostTeen!