To hop back on topic for a minute:
Male-to-female musician here.
Ha ha, yeah, girls are usually the ones singing or playing the keyboards, huh? People have such deeply rooted preconceptions of gender roles, especially when it comes to popular music styles, and especially in the traditionally male-dominated world of metal music. There are notable exceptions, and those exceptions are usually seen as both unexpected and cool. Both trans- and cis-females have a huge opportunity to break into styles like metal playing something like guitar, especially if they are really, really good at it. That said, I'm not saying people should take advantage of gender expectations to be successful. It's just how it is.
In terms of my music, I'm very much focused on finding ways to be successful as a musician while not shooting for fame and fortune, the concepts of which are quickly evaporating in today's failing music industry. Right now, I'm writing music for a rock musical that's being performed at a local college, and the music kind of veers between symphonic metal like Nightwish or heavier Queen, and more indie/alt-rock based piano stuff like Keane, Kings of Leon, and lighter Porcupine Tree. I know it sounds bizarre, but it works. It's kind of a tongue-in-cheek play, so the mish-mash of styles clicks. Anyway, I would love to work on minor productions like this, and maybe do some work for television or commercials, while maybe having a band on the side for fun. I think there are definitely ways to "make a living as a musician" today in a responsible, sane manner, and not always hoping for some big break that will probably never happen.