Well, with the two latest DDO updates concerning devils and with Halloween this week, it's appropriate to have a listen to some devil-themed music, no? Specifically, Giuseppe Tartini's "Devil's Trill" violin sonata.
For whatever reason, there seems to be a strong association with the idea of devils and fiddles; similarly, angels are often associated with trumpets or harps. In Tartini's case, the story goes, he had a dream where the devil played the violin with astonishing skill. Tartini tried to copy the music from his dream, but always felt it was missing something. Nevertheless, he thought this sonata was his best work (an opinion that seems to be shared by critics--while Tartini was a virtuoso fiddler himself and composed over a hundred violin works, the "Devil's Trill" dwarfs any other composition of his in terms of fame).
The sonata starts simply enough, but even a distracted listener will soon detect the incredible skill it must take to perform the violin part. There are many instances where the fiddler must project two separate musical lines, many instances with rapid and extended trill passages (alternating two notes). In comparison, the pianist playing the accompaniment must be bored out of her mind.