The narration was actually quite informative.I am watching this at the moment. I have it muted, so I don't know if there is narration or music, but so far, I'm liking it.
Definitely learned a couple things. Had never researched how the burst setting worked...very interesting. Also never really thiught about how the lugs and cam interacted. Knew how it all moved from assembling and disassembling them, but it was near to see it function while cycling.
The narration was actually quite informative.