Those who weren't around before meteor wouldn't remember this, but crafting used to have its own background music. Considering that music was specifically written to accompany crafting, the Company Workshop would seem a nice opportunity to bring it back. As such, it seems odd for the gathering music (that was, and is still, played during gathering levequests) to be re-used for the company workshop theme.

It's not that the gathering music doesn't suit the workshop; it's just confusing for those of us who know that crafting music exists to be listening to the gathering music instead. =P

For reference, both themes are on the "Before Meteor" soundtrack.
gathering: "When a Tree Falls"
crafting: "By Design"

Although, the old crafting music did play during part of one of the new job quests, for some reason. =o