About

"There was once a word used---swing. Swing went in one direction, it was linear, and everything had to be played with an obvious pulse and that's very restrictive. But I use the term 'rotary perception.' If you get a mental picture of the beat existing within a circle, you're more free to improvise. People used to think the notes had to fall on the center of the beats in the bar at intervals like a metronome, with three or four men in the rhythm section accenting the same pulse. That's like parade music or dance music. But imagine a circle surrounding each beat-each guy can play his notes anywhere in that circle, and it gives him a feeling he has more space. The notes fall anywhere inside the circle, but the original feeling for the beat isn't changed. If one in the group loses confidence, somebody hits the beat again. The pulse is inside you. When you're playing with musicians who think this way you can do anything. Anybody can stop and let the others go on. It's called strolling…."
---Charles Mingus, Beneath the Underdog