To my mind, there exists a strong resonance between Street Photography and a D.J.'s Spinning.

Firstly, they both are entirely dependant on timing. For the musician it is following the beat precisely, deciding when to throw a break beat, when to fade between the tables, everything is determined on the rhythm surrounding him. He influences it, but ideally, a DJ follows the beat.
The street photographer is no different in humbleness. To be out searching for moments in time is to be following rhythms. Watching the changing expression of background figures, waiting for an element to come into or leave the frame, is to be acutely aware of surrounds and to be hyper-attuned to everything around.

The material of the Art itself is common in that they both exist outside the artist. While an MC combs bargain used record bins, the photographer is at parades, rodeos, and farm auctions. We both are impressionable archivists, searching and hunting for our own expression by being enmeshed in the ether.