According theddlovatofansite, it's Demi Lovato singing her new song 'Different Summers' from Camp Rock 2: The Final Jam. It's low quality, but u can still hear it... do you like the sound? (skip to 0:09)
I Really Like The Sound Of This! It Sounds Like A More Grown Up Version Of This Is Me.Demi Has A Awesome Voice & Hopefully She Has More Songs On The Album...Cause She Has The Best Voice.