Here are some videos that showcase the hirosaki festival and building the Neputa Floats.

This festival is very interesting in that it's main imagery is directly ingrained in the different aspects of the parade. The lanterns help to illuminate the night and showcase large images of warriors and significant mythological figures. Alongside this the large drums create sounds that would resonate fully through the crowd and those who are participating. The fact that the festival is based around warding off sleep demons makes light and sound are very important as they are directly connected to the process of warding off sleep, but within the festival they are so beautifully decorated. The community  cooperation when it comes to building the floats and working together to organize the festival works as one of it's strongest aspects.