There are at least 3 bands called Insania:
1) Power metal band from Stockholm founded in 1992.
2) Hardcore/Crossover band from Brno (Czech Republic) founded in 1987. Also known as Skimmed from 1988-90.
3) Power metal band from Germany
1) Insania was founded in 1992 by two musicians from Stockholm - Mikko Korsbäck (drums) and Henrik Juhano (guitar). They are now known as Insania Stockholm. The goal was to write and play music in the vein of Helloween, Gamma Ray and Blind Guardian. Henrik had earlier played in various garage bands.