In the case of this Wikipedia article, the label was unthinking verbiage out of the writer's head, probably created in a 1000-word-per-hour editing binge. It adds no useful information.

In other contexts it does add information, but only when it's clear from that context how to interpret it - sometimes it might be saying something about style, sometimes about intellectual property status. (The "Traditional Reel" is in what most people would think of as a traditional Scottish style, but it's copyrighted to the estate of Donald Macleod since he wrote it).