By the way,
Not exactly Free, but actually I started with going straight to Avant-garde/Jazzcore, like Naked City or The Flying Luttenbachers. But then again, that's me. :3 I already came from Prog/Mathcore/Grind/other "strange" music. It's the "normal" stuff I had to start liking...
Naked City is so good. I can't tell you how baffled I was by their self titled when I first heard it 8 years ago, eYe barking and ululating over 30 second blasts of mutant rock makes for an effective alarm on my iPhone.
And Makise Kurisu is my waifu. Hentai Tensai Shoujo has such a nice flow to it