Miley Cyrus is a superstar to millions of teens around the world as Hannah Montana, but it's a more grown-up Cyrus that emerges on her new album, "Breakout." The set is due this week via Hollywood; fi

Miley Cyrus is a superstar to millions of teens around the world as Hannah Montana, but it's a more grown-up Cyrus that emerges on her new album, "Breakout." The set is due this week via Hollywood; first single "7 Thing" is No. 9 this week on the Billboard Hot 100.

"It's grown-up," Cyrus says of the effort. "I wrote all the songs except two. My last one, 'Meet Miley Cyrus,' was more just meeting me, finding out who I am, and here it's more getting in depth of what's been going on in my life in the past year."

Cyrus pushed to write the songs herself this time around, saying that, "No matter how long what I'm doing here lasts, I want to be a songwriter for the rest of my life. I love it and it's my escape. I just hope this record showcases that -- more than anything -- I'm a writer."

Cyrus is in the midst of filming the third season of her hit Disney show "Hannah Montana," as well as a "Hannah" movie in Tennessee. Her team is also plotting a successor to her runaway smash 2007 concert tour, which drew nearly 1 million fans.