Help refining my book idea?

My idea is... choppy. I'm not sure how to clear it up and I don't even have a generally stable plot. It's romance, just to warn you. This is what I have so far for my idea:

Kimber has been training with her mom since she was a girl to sing, dance, and perform. She can't stand the actresses' snotty attitudes, and thankfully hasn't picked up from them yet. Her dancing partner, Alec, has always liked her more than just friends, but refuses to show his true feelings for her. He only knows this side of her, and realizes that she doesn't even bat an eye his way once off stage. There isn't a moment when someone will see her without her earbuds in, unless, that is, if she's up on stage. When her mom doesn't have her practicing, or not even speaking at all, Kimber is out on the streets with her best friend, Juliette, who knows nothing of her actual lifestyle with her psychotic mom. On her birthday one year Juliette brings her to a part of town Kimber has never seen, and finds a love for an old, run down music shop selling old time records and CDs. Not to mention the lovely young lad behind the counter. Caden has been working at his uncle's shop ever since his dad left him and his mom, who eventually was separated from her son when he was ten. He has know Juliette for years, and soon finds a new relationship building with this girl's best friend-

-And I don't know where to go from there. It's sort of like me drawing a blank... literally. If that's even possible. But *shrug* That just sums up the whole concept of my thoughts on this book. What do you think? What would you like to see in a romance book?