So I was on YouTube and I stumbled across a cover of a Jay-Z song. It was played on a moog. There has been a reoccurring riff I've been hearing in a lot of soloing. Especially Berklee-ish stuff. Very modern. I've posted a link to the cover: http://youtu.be/bXlDWZmWcak Jay Z - Show Me What You Got SYNTH BASS (doc skim) The riff I'm talking about is at 2:30. In the comments people have called it "cycle fourths" "circle fourths" I just want to know, what is it? And where can I learn it? Any instructional websites? Videos? I'd really love the help. Thanks!