Quote:
Originally Posted by
FiveFiveFive 
Someone once described Shostakovich's music as being "like classical music with wrong notes to make it sound modern." Sounds about right. I've never been a fan, but if you want to give him a shot, check out Marc Hamelin's recording of the 1st and 2nd piano concertos.
And if you really want meaningful dissonance, there's always Schoenberg.
One of my favorite music reviews of all time is when a critic said Shoenberg's Kammersymphonie was "one giant 20-minute wrong note."
(That said, it's an absolute masterpiece, and ends with one of my favorite send-offs of any piece of music ever.)