The Sky is Everywhere by Jandy Nelson
Seventeen-year-old Lennie Walker, bookworm and band geek, plays second clarinet and spends her time tucked safely and happily in the shadow of her fiery older sister, Bailey. But when Bailey dies abruptly, Lennie is catapulted to center stage of her own life—and, despite her nonexistent history with boys, suddenly finds herself struggling to balance two. Toby was Bailey's boyfriend; his grief mirrors Lennie's own. Joe is the new boy in town, a transplant from Paris whose nearly magical grin is matched only by his musical talent. For Lennie, they're the sun and the moon; one boy takes her out of her sorrow, the other comforts her in it. But just like their celestial counterparts, they can't collide without the whole wide world exploding.
This sounds like such a great book! Can't wait for it to be out in stores :)
(Marisa and Arielle may post later.)