Cobus Potgieter was in his late teens when he virtually invented the drum cover video, started posting from his home in South Africa and became a YouTube phenomenon (nearly 1 million subscribers and 300 million views). Since relocating to Los Angeles a decade ago he has grown into a world-renowned drummer, bandleader and educator— and one of modern drumming's biggest influences. His library of lessons, masterclasses and shows remain among the most popular, informative and relevant on the Drum Channel website. Here are just a few...