Most 15-year-olds are enjoying summer vacation right now. But not JoJo -- the singer is continuing to plug away on High Road, giving literal meaning to the term "sophomore" album.

JoJo's already collaborated with a ton of talent for the album, which follows the self-titled debut she released when she was 13 (see [article id="1525018"]"JoJo Says Being A Teenager Has Given Her A Lot To Write About"[/article]). Onboard are songwriters Diane Warren and Billy Steinberg, plus producers Scott Storch, Timbaland, Swizz Beatz and, most recently, Jermaine Dupri. "This is just a whirlwind," she said. "It's very exciting to be working with them. And Jermaine, we just met, and he's just very laid-back."

So far JoJo's recorded about 25 songs, which she describes as a mix of hip-hop, R&B and pop. Some of the songs she's hoping to include are "How to Touch a Girl," which she co-wrote with Steinberg ("that's just how to win over her heart"); "The Good Old" ("that's very urban leaning"); the title track ("that's very inspirational"); and "Too Little, Too Late," written by Steinberg. "It's not angry, like 'Leave (Get Out),' " JoJo explained of the first single. "It's just, you're disappointed, this is your first love, but you have to move on. It's just a big, big song."

JoJo says she feels like she's walking "a fine line" when it comes to love songs, because although she feels mature, she knows she's not mature enough. "So it becomes a question, 'What is acceptable to write about? How would this come across? What would people think about it?' " she said. "I'm not trying to freak anybody out, it's just a young girl becoming a little bit older and getting to know herself. And at the end of the day, I just have to be happy with it, because you can't please everyone. I write about what's real to me and whatever I think, so that's kind of what the process is for me."

Part of the process, too, she said, was trying to just forget about analyzing everything and just do normal things, like driving around with her friends to get Slurpees. "I don't feel like I've missed out on anything," she said. "If anything, I learn way more. I get to see the world."

Next up on her list of things to do: get a driver's license, get a car, get involved, get a Grammy and finish high school -- not necessarily in that order. And to make sure she gets an invite to the next VMAs, JoJo's already shooting the video for "Too Little, Too Late." She recorded the clip during the World Cup playoffs, so of course, it has a soccer theme. "It's my favorite sport," she said, "so I thought it would be a great way to talk about it."