There is a video on YouTube of clips of what are rumored to be new songs from Miley's new cd that is supposed to be coming out later this year. In the video Miley's sister Noah sings one of the songs and there are two "Hannah Montana lost songs" Not This Girl and No Stopping Me. Also one of the songs in the video is a cover of the Cheyenne Kimball song Four Walls.
Check out the YouTube video.