Many people think of Satanism as selling your soul for worldly desires. Giuseppe Tartini is said to have sold his soul to Satan for violin skills. His piece, the "Devil's Trill Sonata" is said to be near impossible to play. Tartini also said that his piece was nothing compared to what he had heard in his dream. Does anyone have any insight on this?
https://www.youtube.com/watch?v=z7rxl5KsPjs
https://www.youtube.com/watch?v=z7rxl5KsPjs