The Speed and Tempophone modes are two of the more esoteric Flex modes in Logic Pro X that won't be used much for traditional vocal and beat correction. But, for EDM beats they are incredibly useful.
If you're into glitch or any kind of creative beat processing, then you'll likely be familiar with iZotope's BreakTweaker. So, how can you make a good thing better? The Modern Grooves expansion pack.
Every DAW worth its salt can help to create distorted, lo-fi drum sounds. In this tutorial, Toby Pitman shows his dirtying techniques that'll make your drums beg you for some soap and water.
Ableton Live is arguably the most exciting audio application on earth to use as a beat mangling device. In this quick tutorial, Mo Volans gets scrunching and twisting with Ableton's built-in FX.