Meet Ke$ha's Brother: Investigative Journalist Doree Shafrir · 01/14/10 10:05AM Ke$ha has ridden her pop-tart, bottle-of-jack-teeth-brushing brand of Autotune rapping to the top of the chart while her big brother Lagan Sebert toils away in near-obscurity as a member of the Huffington Post Investigative Fund. (Also: KINDA CUTE!)