Demi Lovato: 'All Night Long' -- FIRST LISTEN!

Have a first listen of Demi Lovato‘s new track “All Night Long” featuring Missy Elliott and Timbaland!

The 19-year-old musician recently dished to MTV News about the song, “It’s about staying up all night long and singing it to the boy that you like, and it’s flirty and fun and it’s not too grown-up, but it’s grown-up enough.”

Demi has been on a Twitter-storm today — tweeting out lyrics from her upcoming album, Unbroken, out September 20th!

WHAT DO YOU THINK of Demi’s song “All Night Long”?

Also, enjoy pics of Demi performing at the 2011 ALMA Awards. 25+ pics inside…