This is done in Photoshop layering up a sequence of images and deleting any unwanted overlaps.
ROQUE VERTONE JR stomping drops in Jackson Hole, Wyoming 
Demian’s exit out of the cave
Attention Photographers: Spend less time in front of the computer and more time behind the lens, with Adobe Photoshop Lightroom.
I had to open the shutter for 30 seconds to get all the light in on this shot. 
This was after the Bemus Bay Pops performed on the floating stage in Chautauqua Lake, NY. This image was used as the cover of the 2010 Chautauqua County Phone Book.