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Success Rate
Fragment of a discussion from Talk:Artifact Investigation
I don't see any benefits from production mastery (would take 32% up to almost 50% and that's not happening), and harvest song is too small of a boost to be noticeable. I can say for sure that it would not hurt your chances.
As I recall, there are also messages in game that suggest artifact quality affect success with the skill, and as it is, rank 1 does have a relatively high base success rate.