So far, the whole Houston "Third Coast" rap thing has been a largely male phenomenon. For every Beyonce, there are two or three Mike Joneses or Lil' Flips. Brooke Valentine is trying to change that, and she's gotten off to a hot start. She's teamed with Big Boi from OutKast for the hit "Girlfight" and with the late, lamented ODB for "Blah Blah Blah." The 19-year-old from the southwest side doesn't just take handouts, though -- she wrote or co-wrote every song on her debut album, Chain Letter. No one knows yet whether she's got staying power or is a flavor of the month, but right now it's definitely Valentine's day.