Who can argue with matters of taste—especially when it comes to music? Not me, so I’ll let you decide which version of Silent Night you like the best. In the first video it’s played on a musical hand saw with help from a cello and piano; in the second it’s played on a Stihl chainsaw.
The practice of playing music on hand saws began in Appalachia in the early 19th century, was popularized by early 20th century vaudevillians, and then later spread to the rest of the world. It became a staple of variety shows in the 1950s and 1960s before falling back into obscurity. While it’s possible to make music on standard hand saws it’s easier to play a purpose-built instrument, which is longer and thinner than a standard saw and may or may not have teeth ground into the non-playing edge. Serious players frequently add an auxiliary grip to the end opposite the handle.
As far as I know, there is no precedent for playing music on a chainsaw so the video from Stihl may be a first. It was shot in the Stihl plant in Virginia Beach, VA, using what appear to be standard test fixtures for testing motors, switches, and other parts of the machine.
Today the choice is between acoustic and gas—though in case you are wondering, there is such a thing as an electrified musical handsaw. I just couldn’t find a video of someone playing one.